Operating Systems Database


Total OS in database (09 December 2019) : 2729
Corresponding OS from query : 1588

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Name
Year
Description Platform Company Link
_unknown
1950s
Early machine capable of distributing computing.
Lincoln TX-2
Lincoln Lab, USA
_unknown
1953
Early machine capable of distributing computing.
DYSEAC
National Bureau of Standards, USA
Open Shop
1954
Early operating system.
IBM 701
IBM, USA
_unknown
1955c
Very early operating system developed by General Motors for the IBM 701. Unnamed.
IBM 701
General Motors, USA
-
MIT's Tape Director operating system
1955
Operating system developed for its Whirlwind computer. Also used for the UNIVAC 1103. The first example of a Job Control Language (JCL) driven operating system.
WHIRLWIND I, UNIVAC 1103
MIT, USA
-
General Motors Operating System (GM OS)
1955
The General Motors Research Laboratories implemented an operating system for the IBM 701. Generally considered the first operating system.
IBM 701
General Motors, USA
-
GM-NAA I/O
1956
Based on General Motors Operating System.
IBM 704
General Motors, USA
Input Output System
1956c
Very early operating system developed by General Motors and North American Aviation for the IBM-704.
IBM 704
General Motors and North American Aviation, USA
-
BESYS
1957
Early computing environment originally implemented as a batch processing operating system at Bell Labs for the IBM 704 computer.
IBM 704, later IBM 7090 and IBM 7094
IBM, USA
UMES
1958
University of Michigan Executive System. Batch operating system.
IBM 704, 709, and 7090
IBM, USA
FMS
1958c
FORTRAN Monitor system.
IBM 709
North American Aviation, USA
SAGE
1950s
Semi-Automatic Ground Environment system. Control Program for IBM AN/FSQ7 to monitor weapons systems. First real-time control system.
IBM AN/FSQ7
IBM, USA
-
SOS (1)
1959
SHARE Operating System. Improvement on the General Motors GM-NAA I/O operating system, the first operating system.
IBM 704, 709
SHARE user group, USA
SABRE
1960s
Semi-Automatic Business Related Environment. The first major transaction processing system, developed by IBM and American Airlines for the IBM 7090.
IBM 7090
IBM, USA
-
DOS (1)
1960s
Disk Operating System for RCA Spectra 70 series.
RCA Spectra 70 series
USA
-
_unknown
1960s
Unix-like OS for IBM System/360 and sucessors.
IBM System/360, System/370, and successors
IBM, USA
_unknown
1960s
Operating system for IBM mainframes.
IBM 1400, 1800, 701, 704, 709, 7090, 7094
IBM, USA
-
BPS/360
1960s
Basic Programming Support. Business-oriented OS for the IBM/360.
IBM System/360
IBM, USA
BTM
1960s
Batch Time-Sharing Monitor for XDS Sigma 5/7.
Xerox XDS Sigma 5/7
USA
-
CAL
1960s
Research OS for the CDC 6400.
CDC 6400
USA
-
MOS (1)
1960s
Master OS for Varian minicomputers. Tape or disk based batch system.
Varian minicomputers
USA
-
MOS ES
1960s
Mobile Operating System. Soviet RIAD mainframes operating system.
ES EVM (ES-1021), SM EVM
Russia
HES
1964<
Honeywell Executive System. Operating System for the Honeywell 800.
Honeywell 800
Honeywell, USA
-
HITAC 8400 OS
1960s
Virtual machine system for the Hitac 8400 (RCA Spectra 70/45).
Hitachi HITAC 8400 (RCA Spectra 70/45)
Hitachi, Japan
-
AMS
1960s
Advanced Monitor System. A single user interactive disk or tape OS for the PDP-9 & PDP-15.
DEC PDP-9 & PDP-15
DEC, USA
-
IBM 1410/1710
1964<
Operating system for the IBM 1410/1710.
IBM 1410, 1710
IBM, USA
-
OS 10 ES
1960s
Operating system for ES EVM.
ES-1010
Russia
IJMON
1960s
Bootable serial I/O monitor for loading programs.
IBM 1400 and IBM 1800
IBM, USA
-
CPS (1)
1960s
Early OS for DEC minicomputers.
DEC minicomputers
USA
-
MACE
1960s
Mansfield and Cahlander Executive. SCOPE competing operating system. Original name for CDC KRONOS OS.
-
Control Data, USA
IOCS
1960c
Input Output Control System. An early I/O Executive for the IBM 7090.
IBM 7090
IBM, USA
Manager
1960s
First Soviet operating system.
Minsk-23
Russia
-
Executive II
1960s
Real-time disk operating system for the IBM 1710.
IBM 1710
USA
-
MultiJob
1960s
J variant that allowed interactive access.
ICL System 4 series mainframes
International Computers Limited, UK
-
DAPS
1960s
Direct Access Programming System.
General Electric GE-400
Bull-General Electric, USA
B1
1960s
Operating System for NCR Century series computers.
NCR Century
NCR, USA
-
B2
1960s
Operating System for NCR Century series computers.
NCR Century
NCR, USA
-
B3
1960s
Operating System for NCR Century series computers.
NCR Century
NCR, USA
-
B4
1960s
Operating System for NCR Century series computers.
NCR Century
NCR, USA
-
Basic Executive System
1960s
Memory-based real-time executive for the IBM 1710.
IBM 1710
IBM, USA
-
J
1960s
System 4 operating system.
ICL System 4 series mainframes
ICL, UK
RTMOS
1960s
Real-Time Multiprogramming Operating System. 24-bit process control operating system that supported both real-time computing and multiprogramming.
General Electric computers
General Electric, USA
JOSS
1960s
JOHNNIAC Open Shop System. An early on-line computing system for the JOHNNIAC computer.
JOHNNIAC
Rand, USA
-
DMS (1) (1 versions)
1960s
Disk Monitor System. Single-task batch-oriented system.
IBM 1130
IBM, USA
PCP
1960s
Primary Control Program, very early version of OS/360 that didn't support multiprogramming.
IBM System/360
IBM, USA
-
PECOS
1960s
CDC operating system, descendent of Chippewa.
-
Control Data, USA
Burroughs MCP
1961
Proprietary operating system of the Burroughs small, medium and large systems, including the Unisys Clearpath/MCP systems.
Burroughs mainframes
Burroughs, Unisys, USA
Unisys MCP
1961
Master Control Program. Proprietary operating system of the Burroughs small, medium and large systems, including the Unisys Clearpath/MCP systems.
Burroughs mainframes
Unisys, USA
CTSS (1)
1961
Compatible Time-Sharing System. Developed at MIT's Computation Center for use on a modified IBM 7094.
IBM 7094
MIT, USA
Executive Monitor
1961
-
Honeywell H800
Honeywell, USA
-
BRIDGE
1962
Operating system for GE computers.
GE-215/225/235
General Electric, USA
-
GCOS (7 versions)
1962
General Comprehensive Operating System. Originally GECOS, General Electric Comprehensive Operating Supervisor.
36-bit GE/Honeywell mainframe computers
General Electric, USA
CO-OP
1962
Operating system for the CDC 1604 computer.
CDC-1604
Control Data, USA
-
IBSYS
1962
Tape based operating system for IBM 7090 and IBM 7094.
IBM 7090/7094
IBM, USA
AOSP
1962
-
Burroughs D825
Burroughs, USA
-
EXEC (5 versions)
1962
UNIVAC's original operating system developed for the UNIVAC 1107.
UNIVAC 1107
UNIVAC, Unisys, USA
EXECUTIVE (1)
1962
Operating system for the Bendix G-20 computer.
Bendix G-20
Bendix, USA
-
Atlas Supervisor
1962
Supervisor Program for the first computer designed to use an operating system. Introduced system calls and virtual storage. Multiprogramming OS.
ATLAS
Manchester University, UK
-
MCP (1)
1962
Master Control Program.
Burroughs B5000
Burroughs, USA
-
SYS
1962
Operating system for the Philco-2000 computer.
Philco 2000
Philco, USA
-
BKS
1962
Batch-oriented operating system for the Philco-2000 computer.
Philco 2000
Philco, USA
-
ADMIRAL
1963
ADMIRAL Master Monitor. Operating system for the Honeywell 800/1800.
Honeywell 800/1800
Honeywell, USA
-
CSIRONET
1963
Operating system for the CSIRONET ?
-
CSIRO, Australia
-
MCP (2)
1963
Burroughs Master Control Program. Proprietary operating system of the Burroughs small, medium and large systems, including the Unisys Clearpath/MCP systems.
Burroughs mainframes (B5000)
Burroughs, USA
TITAN Supervisor
1963
Early time-sharing system.
Atlas 2
Queen's University of Belfast, UK
-
MOD (7 versions)
1964
Series of operating systems for the NEAC-series 2200, which was developed in technical collaboration with Honeywell.
NEC NEAC-series 2200
NEC, Honeywell, Japan
SCOPE (7 versions)
1964
Supervisory Control Of Program Execution or Simultaneous Control Of Program Execution. File-oriented system using mass storage, random access devices. Productized version of Chippewa.
CDC 3000/6000/7600 series
Control Data, USA
GECOS (3 versions)
1964
General Electric Comprehensive Operating System
General Electric mainframes
General Electric, USA
SCP (1)
1964
Supervisory Control Program.
DEC PDP-6
GEC Computers, USA
-
TSM
1964<
Time Sharing Monitor. Early timesharing OS for the 7090.
IBM 7090
IBM, USA
-
MONARCH
1964
Operating system for the SDS 9000 computer.
SDS 9000
Scientific Data Systems, USA
-
TSS (1)
1964<
Early timesharing system for the AN/FSQ-32.
AN/FSQ-32
USA
-
DTSS
1964
Dartmouth Time-Sharing System. Timesharing with the BASIC language for liberal arts students, on a novel 2-computer system (GE-235 + Datanet 30).
GE computers
Dartmouth College, USA
-
COS (1)
1964
Comprehensive Operating Supervisor.
GE 625/635
General Electric, USA
-
Realcom system
1964
Operating system for the RCA 3301 computer.
RCA 3301
RCA, USA
-
B5000 Master Control Program
1964
Multiprogramming operating system.
Burrough B5000
Burroughs, USA
Berkeley Timesharing System
1964
Operating system for Scientific Data Systems' SDS 940.
SDS 940
Scientific Data Systems, USA
-
TOPS-10 (4 versions)
1964
Timesharing/Total Operating System-10. Discontinued operating system from DEC for the PDP-10 (or DECsystem-10) computer family.
DEC PDP-10, PDP-6
DEC, USA
TOS (1)
1965>
Tape OS.
Hitachi HITAC 8000
Hitachi, Japan
-
TOS (3)
1965c
Tape Operating System. Early operating system for the RCA Spectra 70.
RCA Spectra 70
USA
-
TOS/360
1965
IBM's Tape Operating System. Similar to BOS above and more fleeting, able to boot and run from 2x00 series tape drives.
IBM System/360
IBM, USA
Pick
1965
Often licensed and renamed. Business-oriented OS featuring an integral relational database.
-
Prime Computer, Pick Systems, USA
TSOS
1965
Time Sharing Operating System. First OS supporting virtual addressing of the main storage and support for both timeshare and batch interface. Renamed VMOS.
RCA mainframes
RCA, USA
SIGMA 7 OS
1965c
Operating system for the SDS Sigma 7 real-time data processing computer.
SDS Sigma 7
USA
-
Chippewa
1965c
Operating system for the CDC 6600 supercomputer. Original name of SCOPE.
CDC 6600
Control Data, USA
SIPROS 66
1965
Simultaneous Processing Operating System.
CDC 6600
Control Data, USA
RCA OSs POS
1965>
Primary OS.
Hitachi HITAC 8000
Hitachi, Japan
-
IBM 1130
1965
Operating system for the IBM 1130
IBM 1130
IBM, USA
COS/MT
1965
Operating system for TOSBAC-5100/10. Was capable of continuously executing batch jobs using a magnetic tape.
Toshiba TOSBAC-5100/10
Toshiba, Japan
MULTICS (31 versions)
1965
Multiplexed Information and Computing Service. Operating system (written in PL/I) whose design began in the late 60's, co-written by MIT, AT&T Bell Labs and GE, that was meant to become the be-all-end-all of OS technology by having just every (un)imaginable feature, and that was supplanted by Unix, despite the fact that Multics was much better(?) designed, because Unix' simple and stubborn design was much more adapted to the very resource-poor architectures of the time. Originally developped for the GE-645 and later the Honeywell 6180.
GE-645, Honeywell/Bull computers
MIT, GE, Bell Labs, USA
Input Output Selector
1965c
An IO Control System for the DDP-116 minicomputer. One of the earliest OSs for minis.
Computer Control Company DDP-116
Computer Control Company, USA
-
MCP (2) (3 versions)
1965
Master Control Program. Was the control program for Fujitsu's medium general-purpose computers FACOM 230-20 and FACOM 230-30.
Fujitsu FACOM 230
Fujitsu, Japan
MVT (2 versions)
1965c
Multi-Programming Variable Tasks. Had up to 15 application regions defined dynamically, plus additional regions for system tasks
IBM System/360
IBM, USA
TDOS
1965>
Tape and Disk Operating System.
Hitachi HITAC 8000, RCA Spectra 70
-
-
BOS/360
1965
Basic Operating System. Early interim version of DOS/360, briefly available at a few Alpha & Beta System/360 sites
IBM System/360
IBM, USA
PDP-6 Monitor
1965c
Monitor System for the PDP-6.
DEC PDP-6
USA
-
DOS/360 (1 versions)
1966
Operating system for IBM Mainframes.
IBM System/360, System/370, and successors
IBM, USA
Model 10PT
1966
Operating system for the MELCOM 3100 series of computers. This operating system used magnetic tapes as external storage and were developed by systematically organizing and enhancing the system programs built up with MELCOM-1530.
Mitsusbishi MELCOM-3100 series
Mitsubishi, Japan
Model 10T
1966
Operating system for the MELCOM 3100 series of computers. This operating system used magnetic tapes as external storage and were developed by systematically organizing and enhancing the system programs built up with MELCOM-1530.
Mitsusbishi MELCOM-3100 series
Mitsubishi, Japan
Model 30T
1966
Operating system for the MELCOM 3100 series of computers. This operating system used magnetic tapes as external storage and were developed by systematically organizing and enhancing the system programs built up with MELCOM-1530.
Mitsusbishi MELCOM-3100 series
Mitsubishi, Japan
DOS-2314
1966c
Disk operating systems for 2314 Disk Access Strorage.
IBM mainframes
IBM, USA
-
MONITOR II
1966
First control program for FACOM 230-50, developed through improving FONTAC MONITOR. for batch processing based on a magnetic tape.
Fujitsu FACOM 230-50
Fujitsu, Japan
GEORGE (4 versions)
1966
GEneral ORGanisational Environment. Used by ICL 1900 series mainframes.
ICL 1900 series mainframes
ICL, UK
HP-1000/RTE
1966
Real-time computer system first produced by Hewlett Packard in 1966 and discontinued in 2000.
HP-1000
Hewlett-Packard, USA
MS/8
1966
Or The RL Monitor System. Discontinued operating system developed for the PDP-8. It was submitted to DECUS in 1970.
DEC PDP-8
Richard F. Lary, USA
-
EGDON (1 versions)
1966
Serial batch and multiprogramming OS for the English Electric KDF9, designed to support program development.
English Electric KDF9
English Electric, UK
-
OS/360
1966
First official OS targeted for the System/360 architecture.
IBM System/360 and successors
IBM, USA
MARK-I
1966
Disk operating system developed for models 20 and 40 of Mitsubishi Electric's MELCOM-3100.
Mitsubishi MELCOM 3100
Mitsubishi, Japan
-
OS/PCP
1966
Primary Control Program. Early batch-serial version of IBM OS/360.
IBM System/360
IBM, USA
-
MFT (1 versions)
1966
Original Multi-programming with a Fixed number of Tasks, replaced by MFT II. See OS/MFT.
IBM mainframes
IBM, USA
4K Disk Monitor System
1967
Discontinued operating system released by DEC for their PDP-8 line of mini-computers.
DEC PDP-8
DEC, USA
TSS/360
1967
IBM's Time-sharing System for the S/360-67. Never officially released, canceled in 1969 and again in 1971.
IBM System/360-67
IBM, USA
TSX
1967c
Time Sharing eXecutive.
IBM 1800
IBM, USA
MOS (2)
1967c
Minimum Operating System. Card-based batch monitor for Univac 9200, 9300.
UNIVAC 9200, 9300
USA
CMS
1967
Cambridge Monitor System or Conversational Monitor System. Single User Interactive OS developed in conjunction with the Virtual Machine Control Program CP-40 at IBM Cambridge Laboratories. Later adapted for CP-67 and VM/370.
-
IBM, USA
MPX
1967c
Multi Programming eXecutive. First IBM system to provide multiple fixed partitions into which programs could be scheduled on the basis of external events, time-of-day clock, time interval, operator command and the batch job control language.
IBM 1800
IBM, USA
COS/DS
1967
Operating system for TOSBAC-5100/20. Was capable of continuously executing batch jobs using a magnetic tape.
Toshiba TOSBAC-5100/20
Toshiba, Japan
Unisys OS 2200 operating system
1967
Operating system for the Unisys ClearPath Dorado family of mainframe systems.
Unisys ClearPath Dorado
Unisys, USA
ORVYL
1967
Timesharing monitor.
IBM System/360
Stanford University, USA
WYLBUR
1967
Operating system for the IBM System/360.
IBM System/360
Stanford University, USA
-
MTS (1)
1967
Michigan Terminal System, developed by a group of universities in the US, Canada, and the UK for the IBM System/360 Model 67, System/370 series, and compatible mainframes.
IBM System/360 Model 67, System/370 series
IBM, USA
CP-40/CMS
1967
Predecessor to CP-67 on modified IBM System/360 Model 40.
IBM System/360 Model 40
IBM, USA
CP-67/CMS
1967
Also known as CP/CMS. Virtual machine control program for the IBM 360/67. Successor to CP-40. See also CMS.
IBM System/360 Model 67
IBM, USA
OS/360 MVT
1967
Multiprogramming with a Variable number of Tasks. Level of OS/360.
IBM System/360
IBM, USA
MARK-II
1967c
Disk operating system developed for model 40 of Mitsubishi Electric's MELCOM-3100.
Mitsubishi MELCOM 3100
Mitsubishi, Japan
-
Multipop
1967
Operating system based on the concurrently developed implemenation of POP-2; Multipop employed no conventional hardware protection mechanisms: its security was guaranteed by accessing system resources via closures of device access functions, and on built in restrictions on code generation embodied in the compiler (an ancient example of a no-kernel system).
-
Robin Popplestone, USA
-
OS/MFT
1967
Multiprogramming with a Fixed number of Tasks. Simple version of OS/MVT suitable for processors with limited memory.
-
IBM, USA
-
OS/MVT
1967
Multiprogramming with a Variable Number of Tasks. Popular OS for IBM 360/370.
IBM System/360, System/370
IBM, USA
-
Michigan Terminal System (MTS)
1967
Time-sharing system for the IBM S/360-67 and successors.
IBM System/360 Model 67, System/370 series, and compatibles
University of Michigan, USA
ITS
1967
Incompatible Timesharing System. Famous OS developed by hackers at MIT's AI lab from 1967 to the early 1980's for the DEC PDP-6 and PDP-10 family.
DEC PDP-6 and PDP-10
MIT, USA
-
Titan File System
1967
Timesharing operating system for the Titan.
-
Cambridge University, UK
-
WAITS
1967
SAIL, Stanford Artificial Intelligence Laboratory. Time-sharing system for DEC PDP-6 and PDP-10, later TOPS-10.
DEC PDP-6 and PDP-10
DEC, USA
BOSS-2
1968c
Operating system for the RC-4000 Computer.
Regnecentralen RC-4000
Regnecentralen, Denmark
-
TOSBAC-1100E OS
1968
First-Generation Operating Systems for the TOSBAC-1100E office computer.
Toshiba TOSBAC-1100E
Toshiba, Japan
MJCS
1968
Multi-Job Control System. Enabled the user to perform real-time inquiry operations from up to 16 terminals (electric typewriters) directly connected to the main unit.
Toshiba TOSBAC-5100
Toshiba, Japan
Pitt Time Sharing System
1968c
An early Timesharing system developed for the IBM S/360.
IBM System/360
University of Pittsburgh, USA
-
MOD4
1968c
Operating system for the Honeywell Series 200.
Honeywell Series 200
USA
-
MONITOR III
1968
Control program for batch processing based on a magnetic drum unit. Job stacking function was added to achieve increased batch processing efficiency.
Fujitsu FACOM
Fujitsu, Japan
-
MONITOR V
1968
Oerating system for Fujitsu’s large general-purpose computer FACOM 230-60.
Fujitsu FACOM 230-60
Fujitsu, Japan
POS (1)
1968c
Primary OS for RCA Spectra 70 And Hitachi HITAC computers.
RCA Spectra 70, Hitachi HITAC 8000
RCA, USA
-
TSS-8
1968
Discontinued time-sharing operating system. DEC also referred to it as Timeshared-8 and EduSystem 50.
DEC PDP-8
DEC, USA
SEL 810A/810B OS
1968c
Batch Serial Operating System for the SEL 810A/810B minicomputer.
SEL 810A/810B
USA
-
ACP
1968
Airline Control Program. In contrast to previous airline transaction processing systems, the most notable aspect of ACP is that it was designed to run on most models of the IBM System/360 mainframe computer family.
IBM System/360
IBM, USA
SINTRAN (2 versions)
1968
Range of operating systems for Norsk Data's line of minicomputers.
Norsk Data computers
Norwegian Institute of Technology, Norsk Data, Norway
CMAS
1968c
Cambridge Multiple Access System.
-
University of Cambridge, UK
-
MOS (3)
1968c
Multiprogramming OS for NCR Century 300 computer.
NCR Century 300
USA
-
COOL
1968
Customer-Oriented Optimum Language. Decimal machine language and operating system for the Melcom 81 computers.
Mitusbishi MELCOM 81
Mitsubishi, Japan
IBM 360/30 OS
1968c
Virtual machine for the IBM 360/30.
IBM System/360-30
USA
-
COS/30
1968
Operating system for TOSBAC-5100/30.
Toshiba TOSBAC-5100/30
Toshiba, Japan
CP/CMS
1968
Control Program/Cambridge Monitor System.
IBM System/360, System/370, and successors
IBM, USA
SUE
1968c
Experimental OS for the IBM S/360.
IBM System/360
USA
-
ESOPE (5 versions)
1968
Operating system prototype.
CII 10070
IRIA, France
OS/200
1968c
Operating system for Honeywell Series 200 family.
Honeywell Series 200 family
USA
-
OS/4
1968c
Operating Systems for UNIVAC 9700.
UNIVAC 9700
USA
-
MARK-III
1968
Disk operating system developed for models 20 and 40 of Mitsubishi Electric's MELCOM-3100.
Mitsubishi MELCOM 3100
Mitsubishi, Japan
OS/7
1968c
Operating Systems for UNIVAC 9700.
UNIVAC 9700
USA
-
D-68
1968
Dispatcher-68. First operating system for the BESM-6 computer.
BESM-6
ITMiVT RAS, Russia
IDA, IDASYS
1968c
Operating system for the CDC 6600 based on the concept of a supervisory computer.
CDC 6600
Institute for Defense Analyses, USA
-
MASTER
1968c
Operatingsystem for Control Data 3300/3500.
Control Data 3300/3500
USA
-
OS/MFT-II
1968c
-
-
IBM, USA
-
OS-3 (2)
1968c
Oregon State Open Shop OS. A timesharing system for the CDC 3300.
CDC 3300
USA
-
T.H.E.
1968c
Research OS developed by Edsgar Dijkstra. Named for the Technische Hoogeschool at Eindhoven, where it was developed. Early exploration of program verification techniques. Early layered system design. First implementation of semaphores.
-
Technische Hoogeschoo, Netherlands
-
VMOS
1968c
Virtual Memory Operating System. Timesharing OS for the RCA Spectra 70.
RCA Spectra 70
RCA, USA
-
THE
1968
Multiprogramming system by Dijkstra. Introduced the first form of software-based memory segmentation, freeing programmers from being forced to use actual physical locations.
Electrologica X8
Eindhoven University of Technology, Netherlands
-
Foreground/Background/8
1968c
Experimental Foreground/Background OS for the PDP-8.
DEC PDP-8
USA
-
MINIMOP
1968c
Multi-Access OS.
-
USA
-
VS/9
1968c
Successor to RCA TSOS. Discontinued computer operating system available for the UNIVAC Series 90 mainframes during the late 1960s through 1980s.
UNIVAC Series 90 mainframes
Sperry UNIVAC, USA
PDP-10/50 Swapping Monitor
1968c
An early OS for the PDP-10.
DEC PDP-10
USA
-
RBM
1969
Real-Time Batch Monitor. Capable of simultaneously performing multiple real-time processing tasks.
Mitsubishi MELCOM-7000, Xerox Data Systems minicomputers
Xerox, Mitsubishi, Japan
RC 4000 Multiprogramming System (RC)
1969
Discontinued operating system developed for the RC 4000 minicomputer .
Regnecentralen RC 4000
Regnecentralen, Denmark
EDOS (1)
1969
Operating system for HITAC 8000 computers. Enhanced functionality based on DOS.
Hitachi HITAC 8000
Hitachi, Japan
Unics
1969
Uniplexed Information and Computing Service. Later Unix. AT&T, initially on DEC computers.
-
AT&T, USA
ELDON 2
1969c
Operating System for the British KDF9.
English Electric KDF9
Leeds University, USA
-
IBM System/3
1969
IBM midrange computer OS.
IBM System/3
IBM, USA
ROS (1)
1969
Operating system for small-to-medium scale real-time processing.
Fujitsu FACOM 230 and 235
Fujitsu, Japan
-
BCM
1969<
Basic Control Monitor for Xerox/SDS computers
Xerox 530, SDS Sigma
Scientific Data Systems, USA
-
DIPS-0 BASIC
1969
Was the first prototype system of the DIPS series.
Hitachi HITAC 8400
NTT, Japan
-
TENEX
1969
Ancestor of TOPS-20 from BBN, for the PDP-10.
DEC PDP-10
DEC, USA
-
RTOS/360
1969c
IBM's Real Time Operating System, ran on 5 NASA custom System/360-75s.
NASA custom IBM System/360-75s
IBM, USA
BOS (1)
1969
For medium-scale batch processing. Capable of simultaneously executing one batch process and up to two sub processes.
Fujitsu FACOM 230 and 235
Fujitsu, Japan
-
KOS (1)
1969<
Kent On-Line System.
ICL 4100
Kent University, UK
-
DOS (2) (8 versions)
1970s
Family of disk operating systems.
-
-
MIRAGE
1970s
Multitasking Real-time OS for 68000 series.
68000
USA
-
Perpos
1970s
Perpetual Processing OS for Computer Consoles Power 55/5. 68000-based multiple CPUs. UNIX-based system featuring high reliability.
Computer Consoles Power 55/5
USA
-
_unknown
1970
Monitor and Operating system for the PDP-8/S computer system.
DEC PDP-8/S
United States Naval Postgraduate School, USA
BPM
1970
Batch Processing Monitor. Capable of simultaneously performing remote batch processing submitted from a remote location and multiple real-time processing tasks.
Mitsubishi MELCOM-7000
Mitsubishi, Japan
-
Fuzzball
1970s
Operating system and applications library designed for the PDP-11 family of computers. It was intended as a development platform and research pipewrench for the DARPA/NSF Internet.
DEC PDP-11
David Mills, USA
LABS/7
1970s
Distributed real-time OS for laboratory control.
-
USA
-
DOS (4)
1970s
DOS Intel 808x/80x86-based, Disk Operating Systems for desktop systems. Capable of up to 32 users per node. Supported a sophisticated network of nodes that were often purpose-built. The name DOS was used in these products login screens before it was popularized by IBM, Microsoft and others.
i808x/i80x86
DataPoint, USA
-
DOS (5)
1970s
Disk Operating System. For real-time systems, providing a filesystem and swapping facilities.
GEC 4000 series
GEC Computers, UK
TRIO
1970s
Operating system for three users, written in Concurrent Pascal, based on SOLO.
DEC PDP-11/55
Per Brinch Hansen, USA
-
DOS ES (2 versions)
1970s
Operating system for RIAD ES computers.
RIAD ES computers
Russia
DOS-11 (1 versions)
1970
See DEC BATCH-11/DOS-11.
DEC PDP-11
IBM, USA
-
DOS-99
1970s
Single User operating system for the GRI-99 Minicomputer.
GRI-99
GRI, USA
-
SCP-2
1970s
Secure Operating System (DOD A1/B3) Multilevel security.
GEC 4000 series
DEC, USA
ONIX
1970s
Adaptation of UNIX, Version 7.
-
Onyx, USA
-
PORTX
1970s
ROM-Based Real-time executive.
-
Destek Group, USA
-
PTOS
1970c
Paper Tape OS for the Cincinnati Milacron CIP/2200.
Cincinnati Milacron CIP/2200
USA
-
Chios
1970s
Operaing system for the UNIVAC 1108 in a service bureau environment.
UNIVAC 1108
Case Western Reserve, USA
-
CiMOS-22
1970c
Batch oriented disk operating system for the Cincinnati Milacron CIP/2200.
Cincinnati Milacron CIP/2200
USA
-
SIRIS (4 versions)
1970
Operating system for CII 1070 and IRIS computers.
CII computers
Compagnie internationale pour l'informatique, France
-
DSM-11
1970s
Database oriented operating system for MUMPS applications on the PDP-11 and VAX.
DEC PDP-11 and VAX
DEC, USA
-
DSU
1970s
Data Secure Unix. A Security kernel for Unix.
-
UCLA, USA
-
DUBNA
1970
System monitor for the BESM computers. Emproved version of D-68. Developped by specialists from the Institute of Atomic Energy. I. V. Kurchatov and the JINR Member States (GDR, Hungary, North Korea).
BESM-6
Ural. Sci. Center (JINR in Dubna), Russia
HEP
1970s
Parallel OS for the HEP MIMD Computer.
HEP MIMD
USA
-
SODS/OS
1970s
Operating system for a Distributed System developed on the IBM Series/1.
IBM Series/1
Univeristy of Delaware, USA
-
HITAC OS
1970
First-generation Operating System for the HITAC computers.
Hitachi HITAC-1, HITAC-5, HITAC-55
Hitachi, Japan
E4
1970s
Real time OS for the Modular One.
Computer Technology Modular One
-
-
ECOPS
1970s
Chippewa descendent.
-
Control Data, USA
MPE-3000
1970s
Operating system for HP 3000.
HP-3000
USA
-
IAS
1970s
Interactive Applications System. Operating system for larger PDP-11 systems. Real-time, multiuser, or both.
DEC PDP-11
DEC, USA
UniFLEX
1970s
Unix-like OS from TSC for DMA-capable, extended addresses, Motorola 6809 based computers; e.g. SWTPC, GIMIX and others.
Motorola 6809
Technical Systems Consultants (TSC), USA
Uniq
1970s
Version of UNIX for PDP-11.
DEC PDP-11
Uniq Digital Technologies, USA
-
WPS
1970s
Wang Word Processing System. Micro-code based system.
Wang WPS
Wang Laboratories, USA
MSOS
1970s
Mass storage OS supporting real-time plus batch processing for the CDC System 17.
CDC System 17
USA
-
CP
1970s
Control Program. A component of VM/370 for the IBM/370. CP is the kernel which implements the virtual machine.
IBM System/370
USA
-
M/OS-80
1970s
CP/M like operating system.
Mostek AID-80F
Mostek, USA
SPIRAL
1970
Small general-purpose computer operating system together with extra functions, such as kana-enabled COBOL, suited for office-computer applications that aimed to be user friendly.
Fujitsu FACOM 230
Fujitus, Japan
MSP/7
1970s
Modular System Program 7. Real-time OS for the IBM System/7.
IBM System/7
USA
-
OS ES (2 versions)
1970s
Operating system for ES EVM. Comparable to S/360.
ES EVM
Russia
SSB-DOS
1970s
Smoke Signal Broadcasting. A variant of FLEX in most respects.
-
TSC ?, USA
-
OS IPM
1970
Operating system for the BESM-6 computer.
BESM-6
IPM, Russia
Reduced Core Monitor
1970c
Modular, core-resident standard operating monitor designes dor use on small or very speclized real-time systems.
CDC 1700
Control Data, USA
-
XOS (1)
1970<
Batch Processing OS for the Xerox Data Systems SIGMA Computers.
Xerox Data Systems SIGMA
USA
-
CP-R
1970s
Control Program for Real-Time. Realtime operating system for Xerox 550 and Sigma 9 computer systems.
Xerox 550 and Sigma 9
Xerox, USA
OS/1100
1970s
Operating System for UNIVAC 1106 and 1110.
UNIVAC 1106 and 1110
Sperry Univac, USA
-
Arachne
1970s
Distributed operating system.
-
University of Wisconsin, USA
-
UTM
1970
Universal Time-sharing Monitor. Operating system for a large-scale system capable of simultaneously performing batch processing, remote batch processing, real-time processing and time-sharing processing.
Mitsubishi MELCOM-7000
Mitsubishi, Japan
-
ARPA
1970
Operating system for the ARPANET.
-
Lawrence Roberts, B. Wessler, USA
CTS-300
1970s
Commercial single or multiuser OS for small PDP-11 systems.
DEC PDP-11
DEC, USA
-
MaRTE OS
1970s
Hard Real-Time Operating System for embedded applications that follows the Minimal Real-Time POSIX.13 subset.
IA-32
University of Cantabria, Spain
RSTS (2 versions)
1970
Resource System Time Sharing. Multi-user time-sharing operating system, initially developed by Evans Griffiths & Hart of Boston, and acquired by DEC for the PDP-11 series of 16-bit minicomputers.
DEC PDP-11
DEC, USA
OS/80
1970s
Early OSE version for the Zilog Z80 processor.
Z80
ENEA, Sweden
-
MUMPS
1970
Multi-user multiprogramming, database oriented OS for DEC computers.
DEC computers
USA
-
DBOS-16
1970
Disk Based Operating System. For General Automation SPC-16 & System 18/30.
General Automation SPC-16 & System 18/30
General Automation, USA
-
OS/RT
1970s
Real-time OS kernel for a variety of CPUs.
-
Destek Group, USA
-
SVS
1970s
Single Virtual Storage. Refers to Release 1 of Operating System/Virtual Storage 2 (OS/VS2); it is the successor system to the MVT option of Operating System/360.
IBM System/360, System/370
IBM, USA
MCTS
1970s
Multiple Console Time Sharing System. Developed to support CAD applications at GM.
-
General Motors, USA
-
OS2000 (1)
1970s
Operating system for Honeywell 200/2000.
Honeywell 200/2000
USA
-
Medusa
1970s
Operating system for Cm* Research Multiprocessor.
Cm* Research Multiprocessor
Carnegie-Mellon University, USA
-
DEMOS (1) (1 versions)
1970c
Message-based OS for the CRAY-1.
Cray-1
Los Alamos, USA
-
RT/EMT
1970s
UNIX compatible OS for the PDP-11.
DEC PDP-11
Human Computing Resources, USA
-
Basic Realtime Monitor
1970s
Realtime OS for the Phillips P-855 and P-860.
Phillips P855 and P860
USA
-
Batch-11/DOS-11
1970
Also known simply as DOS-11 was the first operating system to run on the Digital PDP-11 minicomputer.
DEC PDP-11
DEC, USA
ND-70
1970
New Dispatcher. New operating system for the BESM-6 computer. Used in spacecraft flight control centers.
BESM-6
ITMiVT RAS, Russia
FLEX9
1970s
Successor to FLEX, which was for Motorola 6800 CPUs.
Motorola 6809 based machines
Technical Systems Consultants (TSC), USA
-
Micropower/Pascal
1970s
Small Pascal Operating Environment for the LSI-11.
DEC LSI-11
DEC, USA
-
Berkeley UNIX
1970s
Version of UNIX for VAX, developed at the University of California at Berkeley. Late 1970s through early 1990s. Latest version is 4.4.
DEC VAX
U.C. Berkeley, USA
-
DISTOS
1970s
Distributed OS for a network of 68000s.
68000
USA
-
BKY
1970s
Batch-oriented OS for the CDC 6600.
CDC 6600
Lawrence Berkeley Laboratories, USA
-
RTOS-16
1970
Real-Time OS.
Digico Micro-16V, General Automation SPC-16
General Automation, USA
-
BLIS/COBOL
1970s
Operating system written in COBOL.
Data General Nova and Data General Eclipse 16-bit minicomputers
Data General, USA
VRX
1970s
Virtual Resource eXecutive. Proprietary operating system on the NCR Criterion series, and later the V-8000 series of mainframe computers manufactured by NCR during the 1970s and 1980s. It replaced the B3 Operating System.
NCR Criterion, V-8000 series
NCR, USA
RTX-16
1970
Realtime executive for General Automation System 18/30.
General Automation SPC-16, Honeywell Series 16
General Automation, USA
-
RTXC
1970s
Quadros RTOS proprietary C-based RTOS used in embedded systems.
ARM - Atmel/Freescale/NXP/ST/TI, Blackfin, 680x0-ColdFire, PowerPC, StarCore, TI-Luminary Stellaris, TI OMAP, XScale
AT Barrett and Associates, Quadros Systems, USA
BOS (3)
1970s
Batch operating system for Honeywell System 700.
Honeywell System 700
Honeywell, USA
-
BOS (4)
1970s
Operating system for Billings computers.
Billings computers
USA
-
KRONOS
1970
Kronographic OS. Timesharing OS for CDC 6000 and CYBER computers based on Chippewa. Replaced later by NOS.
CDC 6000 series and successors
Control Data, USA
FSOS-16
1970
Free Standing Operating System. Basic memory-resident OS for General Automation SPC-16 mini.
General Automation SPC-16
General Automation, USA
-
2120 Disk operating system
1971c
Disc operating system for HP-2100.
HP-2100
Hewlett-Packard, USA
AIST-O
1971
Time-sharing operating system with batch and multi-access.
-
Russia
-
SIRENA
1971
Time-sharing operating system for airline reservations.
-
Russia
-
TYMNET
1971
Operating system for the Tymnet network.
SPC-12, SDS-940, Varian 620
Tymes, USA
LTSS
1971<
Lawrence Timesharing System. Early Timesharing OS.
CDC 7600
Lawrence Livermore Labs, USA
-
UNIX (9 versions)
1971
Family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix.
-
Bell Labs, USA
UNIX Time-Sharing System (10 versions)
1971
"Ken's new system," for its creator (Ken Thompson), officially Unics and then Unix, the prototypic operating system eated in Bell Labs in 1969 that formed the basis for the Unix family of operating systems.
DEC PDP
Bell Labs, USA
UTS (1)
1971
Universal Time-Sharing System. Time Sharing Operating System for Xerox SIGMA computers.
Xerox SIGMA
Xerox, USA
OS/8
1971
Primary operating system used on the Digital Equipment Corporation's PDP-8 minicomputer. Ancestor of RT-11.
PDP-8
DEC, USA
RSX-15
1971<
Real-time multitasking executive for DEC PDP-15.
DEC PDP-15
DEC, USA
-
OSII
1971
Operating system for Fujitsu’s large-scale general-purpose computers FACOM 230-45S and FACOM 230-55.
Fujitsu FACOM 230-45S and Fujitsu FACOM 230-55
Fujitsu, Japan
-
DISPAK
1971
Dispetcher Paketov. Operating system for the BESM-6 computer. Used in Atomic research.
BESM-6
ITMiVT RAS, Russia
BOS II
1971
BOS with Multiprocessing of up to 4 jobs.
Fujitsu FACOM 230 and 235
Fujitsu, Japan
-
BPS-99
1972c
Business oriented operating system for the GRI-99.
GRI-99
USA
-
2000E
1972c
Timesharing operating system.
HP-2100
Hewlett-Packard, USA
-
DOS (3)
1972<
Disk Operating System.
Interdata, Lockheed computers, HP-2100; Datapoint 1100, 2200, 5500, DEC PDP-11; Prime 100,200,300, Four-Phase System IV, GEC Computers, Computer Automation computers
USA
-
2000F
1972c
Timesharing operating system.
HP-2100
Hewlett-Packard, USA
-
DOS/VS
1972
Successor to DOS/360. First DOS offered on System/370 systems, provided virtual storage.
IBM System/370
IBM, USA
PRIMOS
1972
Sometimes spelled PR1MOS and PR1ME. Written in FORTRAN IV, that didn't have pointers, while later versions, around version 18, written in a version of PL/1, called PL/P.
Prime Computers
Prime Computer, USA
DSC
1972
Network operating system.
-
D.J. Farber, K.C. Larson, USA
-
RDOS (1)
1972
Real-time Disk Operating System. With variants: RTOS and DOS.
Data General Nova
Data General, USA
-
SOC
1972
-
-
M. M. Somia, USA
-
Edos (2)
1972
Enhanced version of IBM's DOS/360 (and later DOS/VS and DOS/VSE) operating system for System/360 and System/370 IBM mainframes.
IBM System/360 and System/370
The Computer Software Company (TCSC), USA
EDOS-MSO
1972
Extended version of EDOS.
Hitachi HITAC 8000
Hitachi, Japan
-
COS (3) (4 versions)
1972
Commercial Operating System. Early OS for the PDP.
DEC PDP-8, PDP-11
USA
OS 6
1972
Simple single-user operating system.
Modular One
Oxford University, UK
MTOS (1)
1972<
Magnetic Tape OS for Datapoint 1100, 2200, 5500.
Datapoint 1100, 2200, 5500
Datapoint, USA
-
MU5
1972<
Operating system for the MU5 computer.
MU5 computer
University of Manchester, UK
-
CTOS (1) (1 versions)
1972<
Cassette Tape OS for Datapoint 1100, 2200, 5500.
Datapoint 1100, 2200, 5500
Datapoint, USA
-
VENUS
1972
Experimental OS for a modified Interdata minicomputer, based on matching the computer architecture to the operating system.
Interdata minicomputers
Barbara Liskov, USA
-
RSX-11 (18 versions)
1972
Realtime multitasking executive for DEC PDP-11. Based on RSX-15.
PDP-11
DEC, USA
MUSIC
1972
McGill University System for Interactive Computing. Operating system developed for the S/370, running normally under VM.
IBM System/370
McGill University, USA
-
VM/370
1972
Virtual Machine Facility/370. Virtual memory operating system. To assist customers in migration from OS/360 to OS/VS.
IBM System/370
IBM, USA
VM/BSEPP
1972
Virtual Machine/Basic Extended Product. Functional ehancement to VM/370.
IBM System/370
IBM, USA
-
OS/SVS
1972
Single Virtual Space. Initial release of OS/VS2. Virtual Storage OS for IBM S/370, based closely on OS/MVT.
IBM System/370
IBM, USA
-
VM/SEPP
1972
Virtual Machine/Extended Product. Functional ehancement to VM/370.
IBM System/370
IBM, USA
-
OS/VS (3 versions)
1972
Port of OS/360 targeted for the System/370 virtual memory architecture, "OS/370" is not correct name for OS/VS1 and OS/VS2, but rather refers to OS/VS2 MVS and MVS/SP Version 1.
IBM System/370
IBM, USA
-
SYSEX
1972<
System Executive. A time-sharing monitor for SIGMA/2 and small IBM S/360 computers.
SIGMA/2 and small IBM S/360
USA
-
OS7
1972
Large-scale software system that supported a virtual space and multiple processors.
Hitachi HITAC 8700/8800
Hitachi, Japan
-
RTE (4 versions)
1972c
Real-Time Exucutive. Realtime operating system for Hewlett-Packard HP-2000 series.
HP-2000
USA
-
DNEPR-2
1972
Time-sharing operating system for the DNEPR-2
DNEPR-2
Russia
-
VS-1
1972
IBM Virtual Storage OS. See OS/VS1.
-
IBM, USA
-
VS-2
1972
IBM Virtual Storage OS. See OS/VS2.
-
IBM, USA
-
TOSBAC-1350 SO
1973
First-Generation Operating Systems for the TOSBAC-1350.
Toshiba TOSBAC-1350
Toshiba, Japan
SCP (2)
1973
System Control Program. Basic OS for the Burroughs B700 series.
Burroughs B700 series, IBM System/3
USA
-
CCP
1973<
Communications Control Program. Limited OS for the IBM System/3.
IBM System/3
IBM, USA
-
DX10
1973>
General purpose, multitasking operating system designed to operate with the Texas Instruments 990/10, 990/10A and 990/12 minicomputers using the memory mapping feature.
TI-990
Texas Instruments, USA
MPE (9 versions)
1973
HP Multi-Programming Executive.
HP-3000 and HP e3000
Hewlett-Packard, USA
Elbrus-1
1973
Soviet computer – created using high-level language u???-76 (AL-76/ALGOL 68).
Elbrus computers
Lebedev Institute of Precision Mechanics and Computer Engineering, Russia
-
ELF
1973
Multiprogrammed OS for the PDP-11.
DEC PDP-11
USA
REALITY
1973
Early version of PICK.
Microdata 1600
USA
-
EMAS (2 versions)
1973c
Edinburgh Multi-Access System for ICL 4-75.
ICL 4-75
University of Edinburgh, UK
CP-V
1973
Compatible successor to UTS. It supported the same CPUs as UTS plus the Xerox 560.
Xerox 550/560 and Sigma 9
Xerox, USA
ARGOS (1)
1973<
ARGonne Operating System.
Xerox Sigma 5
Argonne National Laboratory, USA
-
Executive (2)
1973c
Used on the 1900 and 290x range of minicomputers. A modified version of Executive was also used as part of GEORGE 3 and 4.
ICL 290x series
ICL, UK
RSEXEC
1973
Experimental, network-wide operating system allowing access to resources distributed on various hosts on the ARPANET based principally on TENEX. The concept have been implemented in the National Software Works (NSW).
-
R.H. Thomas, USA
-
OS/700
1973c
Realtime multiprogramming OS for Honeywell System 700.
Honeywell System 700
USA
-
VME (4 versions)
1973
Virtual Machine Environment. Mainframe operating system. Implementation language S3 (ALGOL 68).
ICL 2900 Series, ICL Series 39 mainframes
ICL, UK
MERIT
1973
Operating system for the MERIT network.
-
Eric Aupperle, USA
RT-11 (11 versions)
1973
Single user OS.
DEC PDP-11
DEC, USA
BB
1973c
Business Basic. BASIC language and operating system for Basic Four computers.
MAI Basic Four
MAI Basic Four, USA
NDOS
1973
Developed for users of small to medium machines with main storage sizes generally ranging between 32 KB and 64 KB.
Hitachi HITAC 8250
Hitachi, Japan
-
VOS (1)
1973<
Virtual machine OS running on the Michigan Terminal System.
Michigan Terminal System
USA
-
BEST (1)
1973
Porgramming language and Operating system for the NEAC System 100 Office computer.
NEC NEAC System 100
NEC, Japan
BEST (2)
1973<
Business Executive System for Timesharing. OS for Qantel Minicomputers.
Qantel Minicomputers
Qantel, USA
-
TMS
1973<
Magnetic tape operation system based on 4K disk monitor system (DMS), but reconfigured to improve speed and performance on a magnetic tape.
DEC PDP-8
DEC, USA
-
DNOS (1)
1973>
Distributed Network Operating System. General purpose, multitasking operating system designed to operate with the Texas Instruments 990/10, 990/10A and 990/12 minicomputers.
TI-990
Texas Instruments, USA
BOSS (3 versions)
1974<
Basic Operating Software System. Based on UNOS by Charles River Data Systems (CDRS).
MAI Basic/Four 350/400/500
MAI Basic Four, USA
-
TOS (2)
1974<
Teletype Operating System for the Microdata 1600 & 3200 minicomputers.
Microdata 1600 & 3200
USA
-
BOSS-15
1974<
Batch OS for the DEC PDP-15.
DEC PDP-15
USA
-
SAX
1974<
Real time OS for Mod Comp Computers.
ModComp Computers
USA
-
TOSBAC-1150 System IV
1974
First-Generation Operating Systems for the TOSBAC-1150 office computer.
Toshiba TOSBAC-1150
Toshiba, Japan
NUCLEUS
1974<
Operating System for GEC Computers.
GEC Computers
GEC Computers, UK
-
BS1000
1974
Operating system adopted for the Unidata series of computers.
Unidata computers
Siemens, Germany
DOS-15
1974<
Disk OS for DEC PDP-15.
DEC PDP-15
USA
-
ACOS-2 (4 versions)
1974
Advanced Comprehensive Operating System-2. Operating system for small computer systems.
NEC ACOS System 200
NEC, Japan
-
MODULAR ONE
1974<
Portable, modular OS.
-
University of Warwic, UK
-
MODUS4
1974<
Operating system for Computer Technology minicomputers.
Computer Technology minicomputers
USA
-
TS8/E
1974<
Timesharing OS for the DEC PDP-8.
DEC PDP-8
USA
-
MONECS
1974
Monash University Educational Computing System. Was a computer operating system with BASIC, COBOL, FORTRAN, Pascal interpreters, plus machine language facility.
DEC PDP-11
Monash University, Australia
TSS (2)
1974<
Timesharing OS for General Automation System 18/30.
General Automation System 18/30
USA
-
Cambridge Ring
1974
Experimental local area network architecture.
-
Cambridge University, UK
CAPS-11
1974<
Cassette Monitor System for the DEC PDP-11.
DEC PDP-11
DEC, USA
-
CAPS-8
1974<
Cassette Monitor system for the DEC PDP-8.
DEC PDP-8
DEC, USA
-
ACOS-6 (4 versions)
1974
Large general-purpose operating system that realized multi-dimensional processing.
NEC ACOS Systems 600, 600S, 700, 800, 900 and 1000
NEC, Toshiba, Japan
-
UCLA VM
1974<
Virtual machine system developed at UCLA for modified PDP-11/45 for data security studies.
DEC PDP-11/45
UCLA, USA
-
COS (2)
1974<
Cassette OS for Computer Automation Alpha LSI and Naked Mini LSI.
Computer Automation Alpha LSI and Naked Mini LSI
USA
-
HYDRA
1974
Early (now discontinued) capability-based, object-oriented, microkernel designed to support a wide range of possible operating systems to run on top of it.
C.mmp Research Multiprocessor
Carnegie-Mellon University, USA
UMMPS
1974<
Virtual machine system for the IBM 360/67.
IBM System/360-67
USA
-
COS (4)
1974<
Concurrent Operating System. Provided limited multiprogramming for Univac 9200, 9300.
UNIVAC 9200, 9300
USA
-
COS (5)
1974<
Operating System for GEC Computers.
GEC Computers
USA
-
SOS (2)
1974<
Standalone OS for Data General Nova & Supernova.
Data General Nova & Supernova
USA
-
CP/M (7 versions)
1974
Originally standing for Control Program/Monitor and later Control Program for Microcomputers, is a mass-market operating system created for Intel 8080/85-based microcomputers.
i8080/i8085/i8086 and Zilog Z80, Z8000
Digital Research, USA
MTDS
1974<
Magnetic Tape OS for Computer Automation Alpha LSI & Naked Mini LSI.
Computer Automation Alpha LSI & Naked Mini LSI
Computer Automation, USA
-
AOS (1)
1974
All-round Operating System. The first OS for Office computers.
Mitsubishi MELCOM 80
Mitusbishi, Japan
MTS (2)
1974<
Magnetic Tape System for HP 2100.
HP-2100
USA
-
AOS (2)
1974>
Advanced Operating System for Data General Eclipse and MV series.
Data General Eclipse
Data General, USA
-
CPPS
1974<
Card/Paper Tape Programming System for the IBM 1130.
IBM 1130
IBM, USA
-
UTS/VS
1974
Operating system for Mitsubishi COSMO mainframes.
Mitsubishi COSMO series
Mitsubishi, Japan
-
Multi-Programming Executive
1974
Discontinued business-oriented mainframe computer real-time operating system. While initially a mini-mainframe, the final high-end systems supported 12 CPUs and over 2000 simultaneous users.
HP-3000
Hewlett-Packard, USA
-
OS/MVS
1974
Multiple Virtual Space. Virtual storage OS for IBM 370, derived from MVT. Originally called VS2, Release 2.
IBM System/370
IBM, USA
-
MAX (4 versions)
1974<
Real-time monitor for a fixed set of processes linked into a single memory image.
ModComp computers
Modular Computer Systems, USA
UNIOS (4 versions)
1974
Operating system for the FACOM V series, developed jointly by Fujitsu, USAC Electronic Industrial and Uchida Yoko.
Fujitsu FACOM V
Fujitsu, Japan
NCOS (1)
1974<
Nonconcurrent OS. Tape or disk based OS for Univac 9200 & 9300.
UNIVAC 9200 & 9300
USA
-
Tape Scope 2
1974<
Tape based OS derived from SCOPE for the CDC System 17.
CDC System 17
USA
-
VORTEX
1974<
Omnitasking realtime executive for Varian minicomputers.
Varian minicomputers
USA
-
BCS
1974<
Basic Control System for HP-2100.
HP-2100
Hewlett-Packard, USA
-
RTEX
1974<
Realtime executive for Interdata minicomputers.
Interdata minicomputers
USA
-
BEST (3)
1974<
Basic Executive & Timekeeper. OS for Varian minicomputers.
Varian minicomputers
USA
-
RTMS
1974<
Realtime multiprogramming OS for General Automation System 18/30.
General Automation System 18/30
USA
-
RTOS (1)
1974<
Real-Time Disk OS for Interdata Minicomputers.
Interdata Minicomputers
USA
-
RTOS (2)
1974<
Real time operating system for Data General Nova.
Data General Nova
USA
-
Newcastle Recursive VM
1974<
Virtual Machine system developed on a Burroughs 1700.
Burroughs 1700
USA
-
RTOS (3)
1974<
Real time multiprogramming OS for Prime 100, 200, 300.
Prime 100, 200, 300
USA
-
Min I
1974<
Basic Operating System for the ModComp Computers.
ModComp Computers
USA
-
DMS (2)
1974<
Disk Monitor System for General Automation System 18/30.
General Automation System 18/30
USA
-
RTS/8
1974
Compact real-time operating system designed for the PDP-8 family of processors.
DEC PDP-8
USA
BMS
1974<
Basic Monitor System.
DEC PDP-9 and PDP-15
DEC, USA
-
BOS (2)
1974<
Basic OS for Interdata (later Perkin-Elmer) minicomputers.
Interdata computers
Interdata, USA
-
PDP-10
1974<
Virtual machine system for the PDP-10.
DEC PDP-10
USA
-
BOS/VS
1974
BOS with Virtual memory control.
Fujitsu FACOM 230 and 235
Fujitsu, Japan
-
NSW
1975
National Software Works. Descendent of RSEXEC.
-
Jonathan Postel, USA
-
BS2000 (5 versions)
1975
Now BS2000/OSD from Fujitsu-Siemens Computers (formerly Siemens Nixdorf Informationssysteme)
Fujitsu-Siemens mainframes
Siemens, Germany
-
ACOS-4 (8 versions)
1975
Advanced Comprehensive Operating System-4. Small-to-medium machines.
NEC ACOS System 300, 350, 400, 450, 500
NEC, Japan
-
CB Unix
1975c
Variant of the UNIX operating system used internally at Bell Labs for administrative databases and transaction processing.
-
Bell Labs, USA
Altair DOS 1.0
1975
Early disk operating system for the Altair 8800 machine.
Altair 8800
MITS, USA
-
MOSS
1975c
Modular OS for the RCA SUMC Computer (Space Ultrareliable Modular Computer). A realtime OS designed to be modifiable.
RCA SUMC
S&H Computing, USA
-
DSOS
1975
Deep Six Operating System. Was a real-time operating system (sometimes referred to as an operating system kernel) developed by Texas Instruments' Geophysical Services division (GSI).
TI-980A minicomputer
Texas Instruments, USA
SOLO
1975
Single-User Research Operating System. Written in Concurrent Pascal, to demonstrate its concurrency mechanism at the California Institute of Technology.
DEC PDP-11/45
Per Brinch Hansen, USA
ICL VME
1975~
Appearing on the ICL 2900 Series and Series 39 mainframes, implemented in S3.
ICL 2900 Series and Series 39 mainframes
ICL, UK
OS/32-MT
1975c
Real time serial and multitasking operating systems for Interdata (later Perkin-Elmer) 7/16 and 7/32 minicomputers.
Interdata 7/16 and 7/32, Concurrent computers
USA
-
OS/32-ST
1975c
Real time serial and multitasking operating systems for Interdata (later Perkin-Elmer) 7/16 and 7/32 minicomputers.
Interdata 7/16 and 7/32, Concurrent computers
USA
-
DCN
1975
Operating system for a distributed network of PDP-11 virtual machines at the University of Maryland.
DEC PDP-11
David Mills, USA
VM2000
1975
Hypervisor from Fujitsu (formerly Siemens Nixdorf Informationssysteme) designed specifically for use with the BS2000 operating system. It is an EBCDIC-based operating system.
Siemens BS2000
Siemens, Germany
-
ISIS (2 versions)
1975
Intel Systems Implementation Supervisor. Was an environment for development of software within the Intel microprocessor family in the early 1980s on their Intellec Microcomputer Development System and clones.
i8080, i8085+L818
Intel, USA
OSIV/F4
1975
One of the operating systems for Fujitsu’s FACOM M series general-purpose computers, and was a super-large general-purpose OS.
Fujitsu FACOM M series
Fujitsu, Japan
VOS2
1975
Was the first OS for the HITAC M series, which was a series of Hitachi's general-purpose computers
Hitachi HITAC M series
Hitachi, Japan
-
VSOS
1975c
Virtual Storage Operating System. Operating system for the Cyber 205 pipelined processor.
Cyber 205
USA
-
Cambridge CAP computer
1976
All operating system procedures written in ALGOL 68C, with some closely associated protected procedures in BCPL.
-
Cambridge University, UK
-
EDX
1976
Event Driven Executive. computer operating system originally developed by IBM for the control of research laboratory devices and experiments.
IBM Series/1
IBM, USA
IBM Series/1
1976
Minicomputer OS.
IBM Series/1
IBM, USA
CP-6
1976
Discontinued computer operating system developed by Honeywell. It was a backward-compatible work-alike of the Xerox CP-V fully rewritten for Honeywell Level/66 hardware.
Honeywell Level/66
Honeywell, USA
CPS (2)
1976>
Control Programming Support, subset of RPS.
IBM Series/1
IBM, USA
Cray Operating System
1976
New name for UNICOS.
Cray computers
USA
-
FLEX (1)
1976
Single-tasking operating system.
Motorola 6800, 6809
Technical Systems Consultants (TSC), USA
VOS1 (3 versions)
1976
Operating system for lower models in Hitachi's HITAC M series of general-purpose computers, was the second OS in the M series following VOS2.
Hitachi HITAC M series
Hitachi, Japan
-
NonStop OS
1976>
Message-based operating system designed for fault tolerance.
Tandem Computers, HP's NonStop line of Itanium servers
Tandem, USA
NOS (1) (3 versions)
1976
Network Operating System. Operating system with time-sharing capabilities. Based on KRONOS.
CDC CYBER, CDC 6000
Control Data, USA
BOS/D
1976
Business Oriented System. Floppy-disk oriented operating system for OKITAC office computers.
Oki OKITAC System 9
Oki, Japan
BOS/F
1976
Business Oriented System. Hard-disk oriented operating system for OKITAC office computers.
Oki OKITAC System 9
Oki, Japan
TOPS-20
1976
Proprietary OS used on some of DEC's 36-bit mainframe computers.
DEC PDP-10
DEC, USA
1BSD
1977
See Berkeley Software Distribution (BSD).
-
U.C. Berkeley, USA
-
OASIS
1977
Renamed THEO in 1983. The first multi-user operating system for 8-bit microprocessor based computers (Z-80 from Zilog).
Z80
Phase One Systems, USA
OIS
1977
Wang Office Information System. Successor to the WPS. Combined the WPS and VP/MVP systems.
Wang computers
Wang Laboratories, USA
DPS (3 versions)
1977
Multitask version of AOS.
Mitusbishi MELCOM 80
Mitusbishi, Japan
CDOS
1977c
Disk Operating system compatible with CP/M.
Cromemco computers
Cromemco, USA
PWB/UNIX
1977
Programmer's Workbench (PWB/UNIX). Early, now discontinued, version of the Unix operating system created in the Bell Labs Computer Science Research Group of AT&T.
-
Bell Labs, USA
TX990/TXDS
1977<
Terminal Executive Development System. Proprietary operating systems for TI-990 minicomputers.
TI-990
Texas Instruments, USA
MP/AOS
1977>
Operating System for microNOVA-based computers.
Data General microNova
Data General, USA
-
Elbrus-2
1977
Used for application, job control, system programming, implemented in AL-76.
Elbrus computers
Lebedev Institute of Precision Mechanics and Computer Engineering, Russia
-
IBM System/34
1977
IBM midrange computer OS.
IBM System/34
IBM, USA
SSP
1977
System Support Program. operating system for the IBM System/34 and System/36 minicomputers. SSP was a command-based operating system.
IBM System/34 and System/36
IBM, USA
-
Virtual Memory System (VMS)
1977
DEC's proprietary operating system originally produced for its VAX minicomputer. Renamed "OpenVMS" around version 5.5.
DEC VAX
DEC, USA
-
OS4000
1977
Operating system introduced as the successor to GEC DOS, for its range of GEC 4000 series 16-bit, and later 32-bit, minicomputers.
GEC 4000 series
GEC Computers, UK
VMS (8 versions)
1977
Originally by DEC and HP now by VMS Software Inc. for the VAX mini-computer range, Alpha and Intel Itanium i2 and i4; later renamed OpenVMS.
DEC VAX-11
DEC, USA
-
OSIV/F2
1977
One of the operating systems for Fujitsu’s FACOM M series general-purpose computers, and was a medium-scale general-purpose OS for medium-scale business operations
Fujitsu FACOM M series
Fujitsu, Japan
OSIV/X8
1977
One of the operating systems for Fujitsu’s FACOM M series general-purpose computers, and was a large general-purpose OS positioned between super-large general-purpose OS OSIV/F4 and medium general-purpose OS OSIV/F2.
Fujitsu FACOM M series
Fujitsu, Japan
-
THEOS
1977
Operating system which started out as OASIS, a microcomputer operating system for small computers that use the Z80 processor.
Z80 microcomputers
Phase One Systems, USA
VOS3 (4 versions)
1977c
Virtual-storage Operating System 3. For its IBM-compatible mainframes, based on IBM's MVS.
Hitachi HITAC M series
Hitachi, Japan
-
MINI-UNIX
1977
"Cut down" UNIX v6 for the low-end PDP-11/10.
DEC PDP-10
Bell Labs, USA
-
VPS/VM
1977
Virtual Processing System/Virtual Machine. Was an operating system that ran on IBM System/370 – IBM 3090 computers at Boston University in general use from 1977 to around 1990, and in limited use until at least 1993.
IBM System/370, IBM 3090
IBM, USA
-
BMOS
1977
Developed jointly by Fujitsu, USAC Electronic Industrial and Uchida Yoko.
Fujitsu FACOM Bm
Fujitsu, Japan
KERNAL
1977
Default OS on Commodore computers.
Commodore 8-bit computers
Commodore, USA
Wang VS Operating System (VSOS)
1977
Used on the VS line of minicomputer systems.
Wang VS line
Wang Laboratories, USA
-
L-320/PS
1978
Operating system for the HITAC L-320, a general-purpose intelligent system with such functions as data entry, billing, and remote job entry.
Hitachi HITAC L-320
Hitachi, Japan
2BSD
1978
See Berkeley Software Distribution.
-
U.C. Berkeley, USA
-
TripOS
1978
TRIvial Portable Operating System.
DEC PDP-11, Computer Automation LSI4, Data General Nova, Motorola 68000, i8086, Cintcode BCPL (VM)
University of Cambridge, University of Bath, MetaComCo, UK
TRIX
1978c
Network oriented OS.
-
USA
-
TRSDOS (6 versions)
1978
Floppy-disk-oriented OS supplied by Tandy/Radio Shack for their TRS-80 Z80-based line of personal computers. Eventually renamed as LS-DOS or LDOS.
Tandy TRS-80
Randy Cook, Tandy, USA
DPCX
1978
Distributed Processing Control eXecutive. operating system for the IBM 8100 small computer system. written in the PL/S-like PL/DS language.
IBM 8100
IBM, USA
PSOS (1)
1978c
An Experimental Provably Secure Operating System.
-
USA
-
p-System
1978c
Support environment for UCSD Pascal, based on an abstract "p-machine." Now distributed by SofTech Microsystems.
-
University of California, USA
-
HDOS
1978
Heath Disk OS. Originally written for the H-8, it ran without modification on the H-89.
Heath H8, H-19 and Zenith Z-89 series
Heathkit, Zenith Data Systems, USA
-
MP/OS
1978c
Version of AOS for the Data General Micro-Nova.
Data General Micro-Nova
USA
-
AMIGO/300
1978c
Small, user-friendly OS for the Hewlett-Packard 300.
HP-300
Hewlett-Packard, USA
-
UCSD p-System
1978
Portable complete programming environment/operating system/virtual machine developed by a long running student project at UCSD.
Apple II
University of California San Diego, USA
Ultimate
1978
Version of PICK.
-
The Ultimate Corp., USA
HT-11
1978
Modified version of RT-11.
Heathkit H11
Heathkit, Zenith Data Systems, USA
-
MROS-68K
1978c
Small memory-resident OS for the Motorola 68000.
68000
USA
-
Lisp machine (CADR)
1978
Also known as LMI. Used an operating system written in MIT's Lisp Machine Lisp.
Lisp Machines
USA
-
COS (6)
1978c
Cray Operating System. OS for the Cray-1 Pipelined Supercomputer.
Cray-1
USA
-
IBM 8100
1978
Operating system for IBM’s principal distributed processing engine.
IBM 8100
IBM, USA
IBM System/38
1978
IBM midrange computer OS.
IBM System/38
IBM, USA
Oryx/Pecos
1978
Proprietary operating system developed for the express purpose of running AT&T's large-scale PBX switching equipment.
Definity G3 switches
Bell Labs, USA
StarOS
1978c
One of two major operating systems developed for the Cm* multiprocessor. Based on concept of task forces.
Cm Multiprocessor
Carnegie-Mellon University, USA
-
IMOS
1978c
Interactive Multiprogramming Operating System for the NCR Century 8200 series minicomputers.
NCR Century 8200 series
NCR, USA
REPOS
1978c
Operating System for small PDP-11's attached to a host computer.
DEC PDP-11
USA
-
Research Unix
1978
Term used to refer to versions of the Unix operating system developed in the Bell Labs Computing Science Research Center.
DEC PDP-7, PDP-11, VAX, Interdata 7/32 and 8/32
Bell Labs, USA
REX-80/80
1978c
Operating system for 8080 and 8086.
i8080
Systems & Software, USA
-
RIG
1978c
Rochester Intelligent Gateway. Network OS. Influenced Accent and Mach.
-
University of Rochester, UK
-
CPF
1978
Control Program Facility.
IBM System/38
IBM, USA
AppleDOS
1978
Basic Operating System for Apple II Computers. It was superseded by ProDOS in 1983.
Apple II
Apple, USA
ZEUS
1978c
Version of UNIX.
-
Zilog, USA
-
VAX/VMS
1978c
Standard operating system for DEC VAX. Based on RSX-11.
DEC VAX
USA
-
ZRTS
1978c
Operating System for the Z8000.
Z8000
Zilog, USA
-
Roscoe
1978c
Distributed OS for multiple identical processors (LSI-11s).
NEC LSI-11
University of Wisconsin, USA
-
RPS (2 versions)
1978c
Real-time Programming System. Real-time interactive operating system for the IBM Series/1, based on MSP/7 and MPX/1800.
IBM Series/1
IBM, USA
VERSAdos
1978c
MS-DOS compatible system for 68000.
68000
Motorola, USA
-
MUSS
1978c
Operating system designed to emphasize portability.
-
USA
-
MVS (6 versions)
1978
MVS supported Enterprise System Architecture, horizontal addressing extensions: data only address spaces called Dataspaces. A Unix environment was available starting with MVS/ESA V4R3.
IBM mainframes
IBM, USA
OS-1
1978
Drum memory operating systems for office computers.
NEC NEAC System 100
NEC, Japan
OS-3 (1)
1978
Floppy disk operating systems for office computers.
NEC NEAC System 100
NEC, Japan
OS-4
1978
Disk operating systems for office computers.
NEC NEAC System 100
NEC, Japan
VOS0
1978
Operating system for HITAC L series distributed processing computers.
Hitachi HITAC L-330
Hitachi, Japan
MICROS
1978c
Distributed OS for MICRONET, a reconfigurable network computer.
-
USA
-
p
1978c
Time-sharing OS for laboratory automation.
-
USA
-
RTM8
1978c
Realtime executive for the AMC 95/4000.
AMC 95/4000
USA
-
Thoth
1978c
Real-time operating system which is designed to be portable over a large set of machines.
-
University of Waterloo, Canada
MIGHTY
1978
Operating system for the TOSBAC Kanji office computer.
Toshiba TOSBAC Kanji System 15
Toshiba, Japan
Newark
1978>
Early version of Eden developed for the VAX environment. The name was chosen because it was "far from Eden."
DEC VAX
USA
-
DJS200/XT1
1978c
Operating system for the Chinese DJS210 and DJS220. Multiprogrammed and deadlock-free.
DJS-210 & DJS-220
China
-
Rx
1978c
Real time executive for the Texas Instruments TMS9900.
Texas Instruments TMS9900
USA
-
KSOS
1978c
Kernelized Secure Operating system. UNIX-like OS with a secure kernel.
-
Ford Aerospace, USA
-
_unknown
1979
Xerox 1100 series of Lisp machines used an operating system also written in Interlisp, and was also ported to a virtual machine called "Medley".
Xerox 1100
Xerox, USA
-
WFS File Server
1979
Simple share file system for distributed environment.
Xerox Alto
USA
TPF
1979
Transaction Processing Facility. IBM real-time operating system for mainframe computers descended from the IBM System/360 family, including zSeries and System z9.
IBM System/360, System/370, IBM z Series
IBM, USA
TRIPOS
1979<
Portable OS for Minicomputers. PDP-11, 68000 series, 32000 series.
DEC PDP-11, 68000, 32000 series
USA
-
BSD (1 versions)
1979
Berkeley Software Distribution, a variant of Unix for DEC VAX hardware.
DEC VAX
U.C. Berkeley, USA
ChorusOS
1979
Proprietary microkernel OS, rival of Mach and a RTOS, (now acquired by Sun Microsystems) for telecommunication devices (cellphones, etc.) and network appliances (webphones, set top boxes, etc...).
x86, 68000, PPC, SPARC,ARM, MIPS
INRIA, France
GNOSIS
1979
Operating system being to run on 37O architecture hardware. GNOSIS offers new approaches to solving the inherent problems of security, auditability, and reliability which are a result of the basic design of current systems.
IBM System/370
Tymshare, USA
COCANET UNIX
1979c
Local network operating system based on UNIX, developed for the COCANET local area network.
-
U.C. Berkeley, USA
-
Alto OS
1979
Alto operating system.
Xerox Alto
Xerox, USA
-
AMEX
1979
Altos Multiuser Executive. Support up to four simultaneous users.
Altos ACS 8000
Altos, USA
MP/M (4 versions)
1979
Multi-Programming Monitor Control Program. Discontinued multi-user version of the CP/M operating system.
i8080, i8085, Z80, i8086, i80286
Digital Research, USA
UCLA Secure UNIX
1979
Early secure UNIX OS based on security kernel.
-
UCLA, USA
UNIX/32V
1979
Early version of the Unix operating system. 32V was a direct port of the Seventh Edition Unix to the DEC VAX architecture.
DEC VAX
Bell Labs, USA
Apple Pascal
1979
Operating system for Apple II.
Apple II
Apple, USA
CPS80
1979
Operating System for FACOM System 80 office computer. Derived from BMOS.
Fujitsu FACOM System 80
Fujitsu, Japan
Cromix
1979
Multi-tasking, multi-user, Unix-like OS. first Unix-like operating system for microcomputers.
Cromemco microcomputers with Z80A and/or 68000 CPU
Cromemco, USA
-
EUMEL
1979c
Extendable multiUser Microprocessor ELan system. Was an OS with persistent processes and data spaces, built to offer a standalone environment for the educational programming language ELAN. Later evolutions of EUMEL comprise the L3 and L4 OSes.
Z80, i8086, 68000, Z8000
GMD, Jochen Liedtke, Germany
Atari DOS
1979
Disk operating system used with the Atari 8-bit family of computers.
8-bit Atari computers
Atari, USA
Idris (3 versions)
1979
Multi-tasking, Unix-like, multi-user, real-time operating system.
68000, 8086, DEC PDP-11, VAX, Atari ST, Apple Macintosh
Whitesmiths, USA
ITOS
1979
Interactive Tutorial Operating System. Was Japan’s first dialog-based operating system and was developed to be backward compatible with OS-1 and OS-4 user software assets from the earlier-shipped NEAC System 100.
NEC NEAC System 100/150,
NEC, Japan
MICRODOS
1979
Operating system for TRS-80 not using a command shell like TRSDOS but used extensions to BASIC. MICRODOS had no file system. All disk accesses were made using the starting sector and length.
Tandy TRS-80
Percom, USA
NLTSS
1979
Network Livermore Timesharing System, also sometimes known as the New Livermore Time Sharing System. Was an operating system that was actively developed at Lawrence Livermore Laboratory.
CDC 7600
Lawrence Livermore Labs, USA
VTOS
1979
Virtual Technology’s Operating System. The second TRS?80 Model I operating system.
Tandy TRS-80
Randy Cook, Virtual Technology, USA
PERQ Operating System (POS)
1980s
Written in PERQ Pascal.
PERQ Computers
PERQ, USA
-
TOS (5)
1980s
Teradata Operating System.
Teradata DBC/1012
Teradata, USA
-
_unknown
1980s
Texas Instruments' Explorer Lisp machine workstations also had systems code written in Lisp Machine Lisp.
Lisp machine
Texas Instruments, USA
LAN Manager
1980s
Network operating system available from multiple vendors and developed by Microsoft in cooperation with 3Com Corporation. It was designed to succeed 3Com's 3+Share network server.
-
Microsoft, USA
Waterloo Port
1980s
PC-DOS version.
IBM PC compatibles
Waterloo Microsystems, USA
-
TP/M
1980s
Version of CP/M for the Epson QX-10.
Epson QX-10
Epson, Japan
-
DOS 3.3
1980s
Standard OS for Apple II Computers.
Apple II
Apple, USA
-
WICAT Multiuser Computer System (WMCS)
1980s
MC-68K multiuser OS for their proprietary microcomputers, used mainly for CBT systems.
WICAT Systems
WICAT, USA
NZ-COM
1980s
Z-System based on CP/M 2.2
Altair
Alpha Systems, USA
86-DOS
1980
Developed at Seattle Computer Products by Tim Paterson for the new Intel 808x CPUs; licensed to Microsoft, became PC DOS/MS-DOS. Also known by its working title QDOS.)
i808x
Seattle Computer Products, USA
-
BS3000
1980s
Functionally similar to OS-IV and MSP from Fujitsu.
Fujitsu-Siemens mainframes
Siemens, Germany
Pilot operating system
1980
Pilot operating system (used in Xerox Star workstations) was written in the Mesa programming language.
Xerox Star
Xerox, USA
DOS KP (1 versions)
1980s
RSTS/E-like soviet operating system.
SM-4, SM-1420, SM-1600
Russia
-
BSO/RTOS
1980s
Small real-time OS for Z80, 6809, 8086, 68000.
Z80, 6809, i8086, 68000
Boston Systems Office, USA
-
DOS/VSE
1980s
Virtual Storage Extended. Also known as VSE, upgrade of DOS/VS, up to 14 fixed size processing partitions.
IBM 43XX
IBM, USA
MOD-400
1980s
Operating system for the Honeywell VPS 6.
Honeywell VPS 6
USA
-
SCP-DOS
1980s
DOS acquired by Bill Gates to create MS_DOS. See 86-DOS.
IBM PC compatibles
Seattle Computer Products, USA
-
GENIX
1980s
UNIX version for the NSC 32016.
NSC 32016
National Semiconductors, USA
-
polyFORTH
1980s
FORTH environment for Z80, 8080, 8086, 6809, 68000, and PDP-11 families.
Z80, i8080, i8086, 6809, 68000, and DEC PDP-11
FORTH, USA
-
DPPX
1980s
Distributed Processing Programming Executive. operating system introduced by IBM, pre-installed on the IBM 8100 and later ported to the ES/9370.
IBM 8100, ES/9370
IBM, USA
SDOS
1980s
Operating System for 6809.
M6809
Software Dynamics, USA
-
PRO/TSX-PLUS
1980s
Version of TSX-PLUS for the PRO-350.
DEC PRO-350
S&H Computer Systems, USA
-
TurboDos
1980s
Enhanced multitasking version of CP/M for Z80 and 8086.
Z80 and i8086
Software 2000, USA
-
Siemens S5-DOS/MT
1980s
Industrial control system based on FlexOS.
-
Digital Research, USA
Prolog-Dispatcher
1980s
Used to control Soviet Buran space ship.
Buran
Russia
ADOS
1980s
Soviet MS-DOS equivalent.
ISKRA 1030/1130
Russia
-
Charlotte
1980s
Distributed OS for the Crystal Multicomputer project. Explores coarse-grained parallelism without shared memory for computationally intensive tasks.
Crystal Multicomputer
University of Wisconsin, USA
-
PTSS
1970s
People's Time Sharing System. A time sharing system for the CDC 6600 based on BKY.
CDC 6600
Lawrence Berkeley Laboratories, USA
-
QDOS (1)
1980c
Quick and Dirty Operating System. Simplified version of CP/M for the i8086.
-
Tim Patterson/Seattle Computer Products, USA
-
QDOS (2)
1980s
Operating system for the British Sinclair QL. Power of UNIX, SuperBASIC command language, up to 20 concurrent tasks with windows.
Sinclair QL
USA
-
QP/M
1980s
Complete CP/M compatible replacement for CCP and BDOS.
Altair
MICROCode Consulting, USA
CMDS
1980c
Cambridge Model Distributed System. Sets out to provide, by means of a number of interconnected mini- and microcomputers, facilities that are similar to those provided by a time-sharing system.
-
University of Cambridge, UK
-
RAFOS
1980s
Real-time System with Buffer Functions. Soviet RT-11 clone.
SM EVM
Russia
MOS (4)
1980s
p-code system for Z80, 8080, 8086, 68000.
Z80, i8080, i8086, 68000
Volition Systems, USA
-
DRM System
1980s
UNIX-Compatible system for 68000.
68000
NV Philips
-
GUARDIAN
1980s
Operating System for Tandem NonStop Computers, featuring high reliability.
Tandem NonStop
USA
-
ALPHA-DOS
1980s
MS-DOS-like Soviet operating system.
ES-1840
Russia
-
MOSIX
1980s
Distributed version of UNIX supporting full transparency and dynamic process migration for load balancing.
-
Hebrew University of Jersusalem, Israel
-
Color BASIC
1980c
ROM-based OS created by Microsoft for the TRS-80 Color Computer.
Tandy TRS-80
Tandy, USA
-
CONDOR
1980s
Distributed OS described as a "hunter of idle workstations," which distributes large computationally intensive jobs among available processors in a workstation pool. Renamed HTCondor.
-
University of Wisconsin, USA
Eden
1980s
Distributed object-oriented OS based on an integrated distributed network of bit-mapped workstations. Capability-based.
-
University of Washington, USA
-
AMOS (1 versions)
1980s
Alpha Micro Operating System. Multiuser, multiprocessing OS for the 68000 family of microprocessors.
68000, 683xx, x86 via emulation
Alpha Microsystems, USA
MPX-32
1980s
Operating system for Gould Concept-32 computers.
Gould Concept-32
USA
-
ULTRADOS
1980
Originally called Level IV DOS. Operating system for the Tandy TRS-80 Level IV Products.
Tandy TRS-80
Vernon Hester, USA
AMX RTOS
1980
Real-time operating system.
68000, 683xx, ARM, ColdFire, MIPS32, PowerPC
Kadak, USA
UMD
1980s
Operating system for 8080, 6800, 68000, Z8000 series, and others.
i8080, 6800, 68000, Z8000
Boston Systems Office, USA
-
EIS-110
1980s
Real-time executive for 8086.
i8086
Electronic Information Systems, USA
-
uNETix
1980s
Network OS for the 8086, 68000, & 16032 families. Multitasking with transparent remote file access, load balancing, and multiple windows. UNIX and PC-DOS compatible.
i8086, 68000, & 16032 families
Lantech Systems, USA
-
IBM 4680 OS (1 versions)
1980s
POS operating system based on FlexOS.
IBM 4680, i286
Digital Research, USA
UniPlus+
1980s
Discontinued commercial version of the Unix System III and System V operating systems for the 68000.
68000
Unisoft Systems, USA
SOS (3)
1980c
Sophisticated OS for the Apple III.
Apple III
USA
-
WIZRD
1980s
Small OS for the M6800.
Motorola 6800
Wintek, USA
-
SPHERE
1980s
Real-time, ROM-based development system.
-
Infosphere, USA
-
M86
1980s
Soviet version of CP/M-86. All commands are in Russian.
ES-1840, ES-1841
Russia
-
Emerald
1980s
Distributed object-based operating system based on fine-grained (object level) mobility.
-
University of Washington, USA
-
IBM System/88
1980s
IBM fault tolerant computer OS.
IBM System/88
IBM, USA
MSP (1)
1980s
Multitasking system Program. Real-time executive for 68000 and Z8000. Uses a "split onion" structure with access to all layers.
68000 and Z8000
Hemenway, USA
-
XENIX (2 versions)
1980
Licensed version of Unix. Licensed to SCO in 1987.
IBM PC compatibles, x86, DEC PDP-11, Z8001, 68000
Microsoft, SCO, USA
OS DVK
1980s
Soviet RT-11 clone.
DVK ( Elektronika MS-0501 and Elektronika MS-0502)
Russia
-
MTK-II
1980s
Small real-time kernel for Z80, 6502, 6800, 8086, 68000.
Z80, 6502, 6800, i8086, 68000
United States Software, USA
-
MTOS (2)
1980s
Multitasking, Multiprocessing OS for 8086 and 68000 families.
8086 and 68000
Industrial Programming, USA
-
OS MIKROS-86
1980s
Soviet operating system for the SM-1810 computer.
SM-1810
Russia
-
REGULUS
1980s
System III based Unix clone, with V6, V7, and SysV extensions.
68000
Alcyon, USA
-
O/S
1980s
Operating system for Intel 8086 and M68000.
i8086, 68000
Applied Systems, USA
-
OS RV
1980s
RSX-11M-like multiprogramming operating system. The command are in english.
SM-4, SM-1420, Elektronika-100-25
Russia
STARPLEX II
1980s
Realtime OS for the Z80A.
Z80A
National Semiconductors, USA
AOS (3)
1980s
BSD Unix version, not related to Data General AOS.
-
IBM, USA
AOS/VS
1980s
Operating System for 32-bit (MV series) Eclipse computers.
Data General Eclipse MV (32-bit)
Data General, USA
-
OS-80 (2 versions)
1980
Formerly MICRODOS. Fast extendable BASIC-language disk operating system.
Tandy TRS-80
Percom, USA
-
Apple III
1980
Operating system for Apple III.
Apple III
Apple, USA
OS-9 (1 versions)
1980
Family of real-time, process-based, multitasking, multi-user operating systems.
ARM-strongARM, MIPS, PowerPC, SuperH, x86/Pentium, XSCALE, Motorola 6809, 680x0, SPARC
Microware Systems, USA
RIO/CP
1980
Network operating system for the ZNET.
Zilog ZNET
USA
-
STRATUS
1980s
Operating system for Stratus-32 Computers.
Stratus-32
Stratus Technologies, USA
-
UNIX-RTR
1980s
See DMERT.
DEC PDP-11
Bell Labs, USA
-
INMOS
1980s
Unix compatible soviet operating system with command in english.
SM-4, SM-1420, Elektronika-100-25, ES-1840, ES-II, ES-III
Russia
-
Apple SOS
1980
Sophisticated Operating System. Primary operating system developed for the Apple III computer.
Apple III
Apple, USA
Z3PLUS
1980s
Z-System based on CP/M 3.
Altair
USA
SUNIX
1980s
Version of UNIX for Z8002.
Z8002
SGS-Ates, Italy
-
EUROS
1980s
Real-Time Operating Systems.
8/16/32 bit processors (AVR, 8051, XC800, 16FX, XC166, ARM, Cortex-M3, PowerPC, Nios II, MIPS32, PIC32)
Euros Embedded Systems, Germany
RM/COS
1980s
Multiuser, multiprocessing OS for 68000. Cobol-based business environment for an abstract C-machine.
68000
Ryan-McFarland, USA
-
ZCPR3
1980s
based on the original by Richard Conn.
Altair
Richard Conn, USA
Zenix
1980s
Zenith Unix.
Zenith computers
Zenith, USA
-
Exelsior
1980s
Operating system for the Kronos workstation.
Kronos
Akademgorodok, Russia
-
RMS09, RMS68K
1980s
Real time operating system for 6809 and 68000 family.
6809, 68000
Motorola, USA
-
EWS-UX/V
1980s
Operating system for NEC workstations based on Unix System V.
NEC EWS/4800
NEC, Japan
-
RMX (2 versions)
1980
Real-time operating system designed specifically for use with the Intel 8080 and Intel 8086 family of processors.
i8080 and i8086
Intel / TenAsys Corporation, USA
SuperDOS
1980s
CP/M 2.2 with SuperDOS as BDOS replacement.
Altair
USA
ZSDOS
1980s
CP/M 2.2 with ZSDOS as BDOS replacement.
Altair
USA
ARX
1980s
Unreleased Mach-like operating system written in Modula-2+.
ARM RISC processors based Archimedes computers range
Acorn Computers, UK
CTOS (2)
1980s
Real time, multitasking, multiprocessing OS for 8086 family.
i8086
Convergent Technologies, USA
-
ROS (2)
1980s
Operating system with Ada Support.
i8086, 68000
Telesoft, USA
-
CTSS (2)
1980s
Cray Timesharing System. Successor to LTSS.
Cray-1
Lawrence Livermore Labs, USA
-
CX/RT
1980s
Operating system for Harris Night Hawk series.
Harris Night Hawk
USA
-
MULTI-FORTH
1980s
FORTH operating environment for the 68000.
68000
Creative Solutions, USA
-
CX/UX
1980s
Operating system for Harris Night Hawk series.
Harris Night Hawk
USA
-
MASTER-11
1980s
Soviet RT-11 clone.
DVK ( Elektronika MS-0501 and Elektronika MS-0502)
Novocherkassk Polytechnic Institute, Russia
-
Multiuser DOS
1980s
Successor of Concurrent DOS 386. Commercial DOS clone by Concurrent Controls.
IBM PC compatibles
Concurrent Controls, USA
AUROS
1980s
Unix III version. Reliable Operating System for the fault-tolerant minicomputer AURAGEN System 4000.
AURAGEN System 4000
Auragen, USA
-
MBOS/5
1980s
Multitasking version of BOS/5.
-
USA
-
VM/SP
1980
Virtual Machine/System Product.
IBM System/370
IBM, USA
-
MDOS
1980s
Operating System for the Data General MV4000.
Data General MV/4000
USA
-
RSX180
1980
Multi-user, multi-tasking, RSX-11M-like OS for Z80 and Z180 processors.
Z80 and Z180 processors
-
-
MeikOS
1980s
Unix-like transputer operating system developed for the Computing Surface.
Meiko Computing Surface
Meiko, UK
iRMX
1980
Real-time operating system originally created to support the Intel 8080 and 8086 processor families in embedded applications.
8080, 8086, 80386 or higher
Intel, USA
DES RT
1980s
Real-time, Unix-like OS for 16-bit microprocessor families and Micro-Vax, DGC MV series.
Micro-Vax, DGC MV series
Destek Group, USA
-
IRX
1980s
Operating system for NCR 8200 series.
NCR 8200
USA
-
IS/3
1980s
Version of UNIX (System 3) for PDP-11 and VAX.
DEC PDP-11 and VAX
Interactive Systems, USA
-
NEIRON-DOS1
1980s
Soviet MS-DOS 3.0 compatible operating system.
Neiron I9.66
Russia
NEIRON-DOS2
1980s
CP/M-86-like operating system.
Neiron I9.66
Russia
DESQview + (1 versions)
1980s
QEMM 386 multi-tasking user interface.
IBM PC compatibles
Quarterdeck, USA
-
MERT
1980s
Multi-Environment Real-Time. Was a hybrid time-sharing/real-time operating system developed for use in embedded minicomputers (in particular PDP-11s). It was later renamed UNIX Real-Time (UNIX-RT).
DEC PDP-11
Bell Labs, USA
-
DESQView/X
1980s
X-windowing GUI.
-
Quarterdeck, USA
NEMIGA OS
1980s
Soviet RT-11 clone.
Nemiga PK 588
Russia
-
BB/M (4 versions)
1980s
Business Basic Micro. Adanced version of BB. BASIC language and Operating system for Basic Four computers. Similar to BB3/BB4.
MAI Basic Four
MAI Basic Four, USA
VOS (3)
1980s
Virtual Operating System. Proprietary operating system running on Stratus Technologies fault-tolerant computer systems. With strong influence from Multics.
i860, x86, PA-RISC, 68000
Stratus Technologies, USA
MIKRODOS
1980s
Soviet counterpart to CP/M-80. Compatible with versions 2.2 and 3.1.
-
MIIPU, Russia
-
Ten15
1980s
Algebraically specified abstract machine. Successor of Flex machine.
-
Royal Signals and Radar Establishment, Malvern, UK
OSx
1980s
Operating System for Pyramid Computers. Supports UNIX System V and BSD 4.2 concurrently.
Pyramid Computers
USA
-
P/OS
1980s
Professional Operating System. Standard OS for the PRO-350 and PRO-380. Derived from RSX-11.
DEC PRO-350 and PRO-380
DEC, USA
-
FOBOS
1980s
Single-user background operating system basic operating system. Soviet RT-11 clone.
Elektronika 60
Russia
-
P2DOS
1980s
CP/M 2.2 with P2DOS as BDOS replacement.
Altair
USA
FODOS
1980s
Soviet RT-11 clone.
Elektronika 60, Elektronika MS 0511, MS 05017502
Russia
-
Newcastle Connection
1980s
Network OS layer for UNIX systems providing transparent distributed access.
-
UK
NewDos/80
1980
Third-party OS for Tandy's TRS-80 personal computers.
Tandy TRS-80
Apparat, USA
DMERT
1980s
Duplex Multi Environment Real Time. Operating system for the AT&T 3B20D telephone switching minicomputer, designed for high availability. DMERT was later renamed Unix RTR (Real-Time Reliable).
AT&T 3B20D
Bell Labs, USA
-
RTUX
1980s
Real time OS based on Unix for 68000 based systems. Multiprocessing, multitasking, message driven.
68000
Emerge Systems, USA
-
TME (1 versions)
1980
Transaction Machine Environment. was the operating system on the ME29 and required CL (Control Language) to run jobs - 'manual' operation being discouraged.
ICL ME29 minicomputer
ICL, UK
VS
1980s
Operating system for Wang VS series systems.
Wang VS
Wang Laboratories, USA
-
TMX
1980s
Transaction Management eXecutive. NCR Corporation's proprietary transaction processing system running on NCR Tower 5000-series systems which were based on Motorola 680xx CPUs.
NCR Tower 5000
NCR, USA
DNOS (2)
1980s
Operating system for NCR computers.
NCR computers
USA
-
PC/NOS
1980s
Network OS for MS-DOS or CP/M.
-
Applied Intelligence, USA
-
RUDOS
1980s
Soviet RT-11 clone.
Elektronika MS 0511
Russia
-
VSE/SP
1980s
Program product replacing DOS/VSE and VSE/AF.
IBM mainframes
IBM, USA
RX116
1980s
See I-TRON.
NEC V20, NEC V30, NEC V40, NEC V50
NEC, Japan
NovaDOS
1980s
CP/M 2.2 with NovaDOS as BDOS replacement.
Altair
USA
RX616
1980s
See I-TRON.
NEC V60, NEC V70
NEC, Japan
PDOS
1980s
Multiuser, multitasking, realtime OS for the 68000, and TI-9900 and 9905.
68000, and TI-9900 and TI-9905
Eyring Research, USA
BOS/5
1980s
Business Operating Software. Business oriented OS for Z80, PDP-11, 8086, and 68000.
Z80, PDP-11, i8086, and 68000
BOS National, USA
-
RX-UX832
1980s
See Mustard.
NEC V60, NEC V70
NEC, Japan
S5
1980s
Operating system for the ALTOS computer (?).
ALTOS computer
USA
-
BOS/NET
1980s
Multitasking, multiprocessing version of BOS/5.
-
USA
-
ACCENT
1981<
Network OS kernel for the PERQ workstation.
PERQ workstation
Carnegie-Mellon University, USA
-
Acorn MOS
1981
Discontinued computer operating system used in the Acorn BBC computer range.
Acorn BBC
Acorn Computers, UK
Business Operating System
1981
Operating system initially developed as an early cross-platform operating system, originally produced for Intel 8080 and Motorola 6800 computers, then redeveloped for actual businesses and business models.
i8080, Motorola 6800, Zilog Z80, DEC PDP-11, VAX
CAP, UK
DOSPLUS
1981<
Operating system for the Tandy TRS-80. Substantial extension of TRSDOS, including support for double density disks.
Tandy TRS-80
Micro Systems Software, USA
-
AEGIS
1981
Discontinued operating system used by the Apollo/Domain line of workstations
Apollo/Domain workstations
Apollo Computer, USA
MP/NET
1981<
Version of MP/M with networking facilities.
-
Digital Research, USA
-
MP/NOS
1981<
Memory-resident, diskless version of MP/NET.
-
Digital Research, USA
-
MS-DOS (17 versions)
1981
Microsoft's DOS variant for OEM, developed jointly with IBM, versions 1.x–6.22 Microsoft's now abandoned DOS variant.
IBM PC compatibles
Microsoft, USA
Lisa Operating System
1981
Lisa Operating System.
Apple Lisa
Apple, USA
Lisa Workshop
1981
The Workshop is a program development environment and is almost entirely text-based, though it uses a GUI text editor.
Apple Lisa
Apple, USA
IBM PC DOS
1981
DOS developed jointly with Microsoft.
IBM PC compatibles
IBM, Microsoft, USA
iMAX 432
1981
Operating system for Intel's iAPX 432 capability machine.
Intel iAPX 432
Intel, USA
XINU
1981
Limited Unix lookalike developed for educational purposes, for use with a text by Comer "XINU Is Not Unix.
DEC PDP-11 and VAX systems, Sun-2 and Sun-3 workstations, Intel x86, PowerPC G3 and MIPS
Purdue University, USA
CP/M-86 (4 versions)
1981
Version of the CP/M operating system that Digital Research made for the Intel 8086 and Intel 8088. The system commands are the same as in CP/M-80
i8088/i8086, Siemens PG685, Siemens PC16-20, IBM PC compatibles
Digital Research, USA
Enterprise/OS
1981c
Operating system for DG MicroNOVA.
Data General MicroNOVA
Data General, USA
-
CP/NET
1981
Networking version of CP/M. Enables microcomputers to access common resources via a network. CP/NET allows microcomputers to share and transfer disk files, to share printers and consoles, and to share programs and data bases.
i8080, i8085, or Z80
Digital Research, USA
-
CP/NOS
1981<
Memory-resident, diskless version of CP/NET.
i8080, i8085, or Z80
Digital Research, USA
-
REX-80/86
1981
Operating system for 8080 and 8086. Real-time executive that offers 16-bit microprocessing and coprocessing support.
i8086
Systems & Software, USA
XOS (2)
1981<
Operating System for the experimental X-Tree Computer Architecture.
-
University of California at Berkelely, USA
-
UNOS
1981
First, now discontinued, 32-bit Unix-like real-time operating system (RTOS) with real-time extensions.
68000
Charles River Data Systems, USA
-
UTS (2)
1981
Discontinued implementation of the UNIX operating system for IBM mainframe (and compatible) computers.
Amdahl 599x, Fujitsu Global Server, IBM ES/9000 series, IBM G4, G5 and G6
Amdahl, USA
V
1981
Discontinued microkernel operating system that was developed by faculty and students in the distributed systems group at Stanford University.
Sun workstations, MicroVAX workstations
Stanford University, USA
MULTIDOS (2 versions)
1981
Disk Operating System for the Tandy TRS-80. Features ability to read and write various file formats. Briefly advertised as ULTRA-II.
Tandy TRS-80 Model 1
Cosmopolitan Electronics, USA
DBLDOS
1981<
Operating system for the Tandy TRS-80. Simple updates to TRSDOS to support the Percom double-density board.
Tandy TRS-80
Percom Data, USA
-
MERLIN (1)
1981
Mini OS for 68000 computers.
68000, Corvus Concept
Silicon Valley Software, USA
-
PC DOS (8 versions)
1981
IBM's DOS variant, developed jointly with Microsoft.
IBM PC compatibles
IBM, Microsoft, USA
BLMX-80
1981
Board-level multitasking executive for National Semiconductor 8080 and Z-80 based CPU boards.
National Semiconductor 8080 and Z-80
National Semiconductors, USA
-
VRTX
1981
Versatile Real-Time Executive. Real-time operating system suitable for both traditional board-based embedded systems and SoC architectures. It has been superseded by the Nucleus RTOS.
ARM, MIPS, PowerPC, RISC
Mentor Graphics, USA
K-DOS
1981
An alternative OS to the Atari Disk Operating System (DOS II) for the Atari 400/800.
Atari 400/800
K-Byte, USA
Domain/OS (9 versions)
1981
One of the first network-based systems. Run on Apollo/Domain hardware. Later bought by Hewlett-Packard.
Appollo, Domain workstations
Apollo Computer, USA
LDOS
1982
Operating system for TRS-80. Originally stood for "Lobo Drives Operating System.
Tandy TRS-80 Models I, II & III
Logical Systems, USA
DPS10
1982
Operating for MELCOM 80 office computers. Groundbreaking operating system for its time. Based on the process management, memory management, file system, and other kernel operations of UNIX System II.
Mitsubishi MELCOM 80 OFFICELAND models 500
Mitusbishi, Japan
TurboDOS
1982
Multi user CP/M like operating system for the Z80 and 8086 CPUs.
Z80, i8086
Software 2000, USA
pSOS (2)
1982
Portable Software On Silicon. real time operating system (RTOS) and developed/marketed for the first part by Software Components Group (SCG).
68000
Alfred Chao, SCG, ISI, Wind River Systems, USA
QNX
1982
POSIX, microkernel OS. Usually a real time embedded OS), Unix-like real-time operating system, aimed primarily at the embedded systems market.
i8088, x86, MIPS, PowerPC, SH-4, ARM, StrongARM, XScale
Quantum Software Systems, Canada
Commodore DOS
1982
Disk operating system used with Commodore's 8-bit computers.
Commodore 8-bit
Commodore, USA
Ultrix (1 versions)
1982
Brand name of Digital Equipment Corporation's (DEC) discontinued native Unix operating systems for the PDP-11, VAX and DECstations.
PDP-11, VAX and DECstation
DEC, USA
Unity
1982
Version of UNIX for the PDP-11 and VAX.
DEC PDP-11 and VAX
Human Computing Resources, USA
-
Star User Interface
1982
Graphical user interface for the Xerox Star.
Xerox Star
Xerox, USA
-
Stratus VOS
1982
Developed by Stratus, and used for IBM System/88, Original equipment manufacturer from Stratus.
IBM System/88, Stratus computers
IBM, USA
-
CROS/D
1982
Conversation Real-time Oriented System. Floppy Disk Operating system for OKITAC System 9 series.
Oki OKITAC System 9 series
Oki, Japan
CROS/F
1982
Conversation Real-time Oriented System. Hard-disk Operating system for OKITAC System 9 series.
Oki OKITAC System 9 series
Oki, Japan
SVM ES (3 versions)
1982
Sistema Virtual'nykh Mashin. IBM VM/370 clone.
RIAD ES
Russia
AVM/EF
1982
Advanced Virtual Machine/Extended Facilities. Was an operating system that controlled Fujitsu’s virtual computer (VM: Virtual Machine) system.
Fujitsu FACOM M-380, M-360, M-340, M-700 series, VP series E model
Fujitsu, Japan
DEMOS (2)
1982
Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema. MNOS alternative.
SM-4, Elektronika-1082, BESM, ES EVM, SM-1700, IBM PC compatibles
Kurchatov Institute of Atomic Energy, DEMOS Co-operative, Russia
MINI-EXEC
1982<
Portable executive for 8-bit microcomputers.
8-bit microcomputers
USA
-
Novell NetWare (S-Net) (4 versions)
1983
Network operating system and the set of network protocols it used to talk to client machines on the network.
Motorola 68000
Novell, USA
Personal CP/M-86
1983
Was only provided for several specific European computers by the manufacturers Siemens PG685 and PC16-20, Apricot PC.
i8086
Digital Research, USA
MNOS
1983
MobilNaya Operatsionnaya Sistema. One of the most widely distributed OS UNIX type in the Soviet Union.
-
IPK Minavtoproma, DEMOS Co-operative, Russia
ProDOS (2 versions)
1983
Name of two similar operating systems for the Apple II series of personal computers. The original ProDOS, renamed ProDOS 8 in version 1.2, is the last official operating system usable by all 8-bit Apple II series computers.
Apple II
Apple, USA
TUNIS
1983<
Toronto University System. Unix-like operating system. TUNIS was a portable operating system compatible with Unix V7, but with a completely redesigned kernel, written in Concurrent Euclid.
DEC PDP-11, Motorola 6809 and 68000, and National Semiconductor 32016
University of Toronto, Canada
GNU
1983
Also known as GNU/Hurd. Operating system and an extensive collection of computer software. GNU is composed wholly of free software, most of which is licensed under the GNU Project's own General Public License.
IA-32, Alpha, ARC, ARM, AVR32, Blackfin, C6x, ETRAX CRIS, FR-V, H8/300, Hexagon, Itanium, M32R, m68k, META, MicroBlaze, MIPS, MN103, OpenRISC, PA-RISC, PowerPC, s390, S+core, SuperH, SPARC, TILE64, Unicore32, x86, Xtensa
-
Coherent
1983
Coherent Unix-like OS from Mark Williams Co. for PC class computers.
IBM PC compatibles
Mark Williams Corp., USA
Concurrent DOS (6 versions)
1983
Successor of Concurrent CP/M-86 with PC-MODE.
i8080, i8086, i286, i386, 68000
Digital Research, USA
Lisa Office System 7/7
1983
GUI environment for end users.
Apple Lisa
Apple, USA
-
LOCUS
1983
Distributed OS based on UNIX.
DEC PDP-11, VAX-11
UCLA, USA
IBM System/36
1983
IBM midrange computer OS.
IBM System/36
IBM, USA
MSX-DOS
1983
MSX-DOS. Developed by MS Japan for the MSX 8-bit computer.
MSX computers
Microsoft, USA
STOP (2 versions)
1983
Secure Trusted Operating Program. Monolithic kernel operating system. Though it provides a Linux-compatible API, STOP is not derived from Unix or any Unix-like system. TCSEC A1-class, secure OS for SCOMP hardware.
SCOMP processor
BAE Systems, USA
SunOS (12 versions)
1983
BSD-based Unix system used on early Sun hardware.
-
Sun Microsystems, USA
VENIX (5 versions)
1983
Discontinued version of the Unix operating system for low-end computers.
DEC PRO-350 (PDP-11 comp.), DEC Rainbow 100, IBM PC
VenturCom, USA
Visi On
1983
First GUI for early PC machines. Not commercially successful.
IBM PC compatibles
VisiCorp, USA
MeDos
1983
Operating System for the Lilith Computer, developed for Modula-2 programming.
Lilith Computer
Niklaus Wirth, Switzerland
NetWare
1983
Network operating system providing high-performance network services. Has been superseded by Open Enterprise Server line, which can be based on NetWare or Linux to provide the same set of services.
Alpha, ARM, PA-RISC, 68k, MIPS, PowerPC, SH3, SPARC, RISC-V, VAX, x86
Novell, USA
DNIX
1983
Unix-like real-time operating system.
68000
Dataindustrier, Sweden
MIOS3 (4 versions)
1983
Operating system for HITAC L-30 and 50 series of office computers.
Hitachi HITAC L-30 and 50
Hitachi, Japan
MIOS7 (3 versions)
1983
Operating system for HITAC L-70 series of multifunctional office computers.
Hitachi HITAC L-30 and 50
Hitachi, Japan
Personal CP/M
1984c
ROM-based version of CP/M 2.2 for small home computers.
Z80
Digital Research, USA
miTRON
1984>
Micro Indutrial TRON. OS for Small embedded systems.
-
Japan
-
TR-DOS
1984
Disk operating system for the ZX Spectrum with Beta Disc and Beta 128 disc interfaces.
ZX Spectrum
Technology Research, UK
TRON
1984
The Real-Time Operating System Nucleus. Specification for a family of real-time operating systems and an associated CPU architecture.
-
TRON Project, University of Tokyo, Japan
BTRON
1984
Business-oriented version of the TRON OS for office workstations with bitmapped displays. Now Chokanji.
-
Personal Media, Japan
C Executive
1984<
Memory-based real-time UNIX-like executive for the PDP-11 or VAX. Runs multiple C or Pascal Tasks.
DEC PDP-11 or VAX
JMI Software Consultants, USA
-
TSX-PLUS
1984<
RT-11 compatible multitasking, multiprocessing OS for PDP-11 family.
DEC PDP-11
S&H Computer Systems, USA
-
Sinclair QDOS
1984
Multitasking operating system found on the Sinclair QL personal computer and its clones.
Sinclair QL
Sinclair, UK
SINIX
1984
Port by SNI of Unix to the MIPS architecture.
MIPS
Siemens Nixdorf, Germany
TWOS
1984c
Time Warp Operating System. OS developed for the Mark III Hypercube multiprocessor, primarily to support asynchronous discrete event simulation. Synchronizes events by unlimited process rollback.
Mark III Hypercube multiprocessor
Caltech Jet Propulsion Laboratory, USA
Classic Mac OS
1984
Colloquial term used to describe a series of operating systems developed for the Macintosh family of personal computers by Apple.
Apple Macintosh
Apple, USA
OS/10
1984<
Operating System for the MDS Series 21.
MDS Series 21
USA
-
Concurrent CP/M (5 versions)
1984
Successor of CP/M-80 and MP/M-80.
IBM PC compatibles
Digital Research, USA
DYNIX (1 versions)
1984
DYNamic UnIX. Unix-like operating system developed by Sequent Computer Systems, based on 4.2BSD and modified to run on Intel-based symmetric multiprocessor hardware.
-
Sequent Computer Systems, USA
Concurrent PC DOS (1 versions)
1984
Concurrent DOS variant for IBM compatible PCs.
IBM PC compatibles
Digital Research, USA
HP-UX (3 versions)
1984
HP's proprietary implementation of the Unix operating system, based on UNIX System V (initially System III).
HP-9000 and Itanium servers
Hewlett-Packard, USA
AMSDOS
1984
AMStrad Disk Operating System. Disk operating system for the 8-bit Amstrad CPC Computer (and various clones).
Amstrad CPC
UK
Mac OS (6 versions)
1984
Operating system for the Apple Macintosh.
Apple Macintosh
Apple, USA
-
Xenix 286
1984
Xenix 286, Unix System V Release 2 based distribution for the Intel 80286 architecture.
i286
SCO Group, USA
Apple Macintosh
1984
Operating system for Apple Macintosh.
Apple Macintosh
Apple, USA
SUN
1984<
General Purpose OS kernel for the HP 9000 Series 500.
HP-9000 Series 500
USA
-
USX
1984<
Real-time development system for 8086, 68000.
i8086, 68000
United States Software, USA
-
Argus
1984<
Distributed programming system featuring resilient objects.
-
MIT, USA
-
CSI-DOS
1984
Operating system, created in Samara, for the Soviet Elektronika BK-0011M and Elektronika BK-0011 microcomputers.
Elektronika BK-0010
Russia
RMS
1984<
Operating system for Datapoint computers.
Datapoint computers
USA
-
UTX-32
1984<
Unix-based OS that included both BSD and System V characteristics. It was one of the first Unix based systems to receive NSA's C2 security level certification.
Gould Powernode 9080
Gould CSD, USA
-
CSP (4 versions)
1984
Customer-oriented System Products. Operating system developed jointly by Fujitsu and USAC Electronic Industrial (which later became PFU) for the FACOM K series of office computers.
Fujitsu FACOM K
Fujitsu, Japan
OS/2 (2)
1984<
Operating System for the MDS Series 21.
MDS Series 21
Mohawk, USA
-
MacWorks
1984
Apple Lisa computer program which shipped with the Macintosh XL. It allowed 64K Apple Macintosh ROM emulation so the Macintosh XL could run classic Mac OS programs.
Apple Lisa
Apple, USA
VAXELN
1984<
Realtime object-oriented OS for the MicroVAX.
DEC MicroVAX
USA
-
VM/PC
1984<
Version of VM/370 for the PC/370.
IBM System/370
IBM, USA
-
VM/XA MA
1984
Virtual Machine/Extended Architecture Migration Assistance. Tool to assist in migration from MVS/370 to MVS/XA.
IBM System/370
IBM, USA
-
Native CPC-OS
1984
Amstrad CPC native OS.
Amstrad CPC
Amstrad, UK
DeskMate
1984
Operating system introduced with the Tandy 1000 computer.
Tandy 1000
Tandy, USA
-
OSIV/ESPIII
1984
Successor OS to medium-scale general-purpose OS OSIV/ESP V2. medium-scale general-purpose operating system.
Fujitsu FACOM M series
Fujitsu, Japan
ITOS-4(V)
1984
Operating system for NEC System 100 and System 150 office computers. Versatile version of ITOS.
NEC System 100/58, 150/68, and 150/78
NEC, Japan
VOS (2)
1984<
Operating System for Harris 600, 700, 800 computers.
Harris 600, 700, 800
USA
-
RTE-6/VM
1984<
Realtime virtual memory OS for dual HP-1000s, featuring high reliability.
HP-1000
USA
-
RTE-A
1984<
Realtime Executive for HP-1000 A-series.
HP-1000
USA
-
MicroVMS
1984
Version of VMS for the MicroVAX.
DEC MicroVAX
DEC, USA
-
RTR
1984<
Successor to DMERT for the AT&T 3B20 Duplex computer, featuring high reliability.
AT&T 3B20 Duplex computer
USA
-
NIDOS
1984<
Operating system for the Nixdorf 8890.
Nixdorf 8890
USA
-
RTTS
1984<
Real Time Task Scheduler. OS for August Systems Can't Fail 300 with triple 8086s, featuring high reliability.
August Systems
USA
-
PC/IX
1984
Derivated from UNIX System III from AT&T.
IBM PC compatibles
IBM, USA
KMON
1984
Operating system for the Soviet personal computers BK-0010.
Elektronika BK-0010
P. A. Bandaletov and E. M. Bandaletov, Russia
VULCAN
1984<
Operating System for Harris computers.
Harris computers
USA
-
Saguaro
1985c
Distributed OS supporting varying degrees of transparency.
-
Univeristy of Arizona, USA
-
MIPS RISC/os
1985
Discontinued UNIX operating system developed by MIPS Computer Systems, Inc. from 1985 to 1992, for their computer workstations and servers
MIPS workstations
MIPS Computer Systems, USA
TOS (4)
1985
Operating system for the Atari 520ST and 1040ST. Derived from Concurrent 68K.
Atari 520ST and 1040ST
USA
-
MISS
1985
Multipurpose Interactive timeSharing System. First Soviet UNIX-like operating system.
ES-1010, ES-1045, D3-28M, IBM PC compatibles, DVK
Physical Faculty of Moscow State University, Russia
Total OA Processor
1985
Operating Systems for the TOSBAC Q Series.
Toshiba TOSBAC Q series
Toshiba, Japan
Windows
1985
16-bit and 32-bit preemptive and cooperative multitasking, running atop MS-DOS.
IBM PC compatibles
Microsoft, USA
Windows 1.0 (1 versions)
1985
First version of Microsoft Windows.
IBM PC compatibles
Microsoft, USA
DOS Plus
1985
Single-user, multi-tasking system derived from Concurrent DOS 4.1 – 5.0.
-
Digital Research, USA
ABCenix
1985>
Unix-like real-time operating system. Developed for the ABC 1600 computer from Luxor.
Luxor ABC 1600
Dataindustrier, Sweden
-
GEM (1)
1985
Graphics Environment Manager.
CP/M, DOS, and Atari TOS
Digital Research, USA
GEM (2)
1985c
Generalized Executive for Realtime Multiprocessor Applications. An experimental OS for robotics systems.
-
Ohio State University, USA
-
DOS-16
1985c
MS-DOS-like Soviet operating system for the ES-1840 computer. Commands are in English and Russian.
ES-1840
Russia
-
Plurix
1985
Aka Tropix. Integrated environment (OS/programming language combination) based on Java with a custom native code compiler for x86, an orthogonal persistent Distributed Shared Memory (DSM) for PC clusters, with a consistency model based on restartable transactions coupled with an optimistic synchronization scheme.
-
Federal University of Rio de Janeiro - UFRJ, Brazil
SerIX
1985<
Unix on Series/1. CMI version of AT&T's UNIX System V OS.
IBM Series/1
CMI
GOS/VS
1985
Operating system for the MELCOM EX series general-purpose computers.
Mitsubishi MELCOM EX
Mitsubishi, Japan
MOS (5)
1985c
An early version of MOSIX. Controls four linked PDP-11s.
DEC PDP-11
USA
-
DSP/BIOS
1985
Embedded tools ecosystem created and offered by Texas Instruments (TI) for use in a wide range of their embedded processors.
Mostly Texas Instruments C2800, C5500, C6000 and OMAP DSP cores, TI-RTOS
Texas Instruments, USA
AmigaDOS
1985c
Basic operating system for Amiga computers. Derived from TRIPOS.
Commodore Amiga
Commodore-Amiga, Canada
-
AmigaOS (11 versions)
1985
Family of proprietary native operating systems of the Amiga and AmigaOne personal computers.
Commodore Amiga
Commodore-Amiga, Canada
SODA
1985c
Simplified OS for Distributed applications.
-
USA
-
AMOK
1985c
A Modular Operating Kernel for the CRAY-1 at the Institute for Defense Analysis. A modular timesharing system providing files, directories, processes, and pipes.
Cray-1
USA
-
Unicos
1985
Name of a range of Unix-like operating system variants developed by Cray for its supercomputers. UNICOS is the successor of the Cray Operating System (COS).
Cray-1, Cray-2
Cray, USA
EMBOS (1)
1985c
Developed by Elxsi for use on their mini-supercomputers.
Elxsi mini-supercomputers
Elxsi, USA
-
INOS
1985c
UNIX lookalike for the Artisan DP-09 (6809 CPU). Based partly on Uniflex.
Artisan DP-09
Introl, USA
-
Interactive Unix System V/386
1985
Port of the UNIX System V operating system for Intel x86.
x86
Interactive Systems, USA
-
XYLEM
1985c
Operating system for the Cedar Multiprocessor, a high-speed, floating point, shared memory. Based on version 4.2 of Unix.
Cedar Multiprocessor
University of Illinois, USA
-
Mach
1985
Kernel developed at Carnegie Mellon University to support operating system research, primarily distributed and parallel computing.
-
Carnegie-Mellon University, USA
ETen Chinese System
1985
Was the most popular DOS-compatible traditional Chinese operating system before Chinese Windows 95.
IBM PC compatibles
E-TEN, China
RISC/os
1985
Port by MIPS for its MIPS-based computers.
MIPS computers
MIPS Technologies, USA
Atari TOS (4 versions)
1985
The Operating System. Also Tramiel Operating System, from Jack Tramiel, owner of Atari Corp. at the time. The operating system of the Atari ST range of computers.
Atari ST
Atari, USA
MUSIC/SP
1985
Multi-User System for Interactive Computing/System Product. Operating system developed for the S/370, running normally under VM.
IBM System/370
McGill University, USA
FADOS
1985c
Operating System for the Fast Amsterdam Multiprocessor (FAMP). A distributed, Real-time OS based on a network of M68000s with a UNIX host.
68000
USA
-
VM/XA SF
1985
Virtual Machine/Extended Architecture System Facility. Allow the machine to provide execution in the virtual-machine environment of most of the instructions (including many privileged instructions) and most of the facilities (such as dynamic address translation) of both the System/370 and the 370-XA architectures.
IBM System/370
IBM, USA
-
Meglos
1985c
Operating system for a multiprocessor supercomputer, built from multiple 68000s and a VAX. Provides virtual circuits for two-way and broadcast messages.
68000 and DEC VAX
USA
-
Banyan VINES
1985
Network operating system for computers running AT&T's UNIX System V.
-
Banyan Systems, USA
DESQview
1985
Text mode multitasking operating environment.
IBM PC compatibles
Quarterdeck, USA
DG/UX
1985
Unix operating system.
Eclipse MV minicomputer line, AViiON workstation and server line
Data General, USA
Microdisk Op Sys
1985c
Operating system for MS2000.
RCA MS2000
RCA, USA
-
TI-RTOS Kernel
1985
Real-time operating system for TI's embedded devices.
Texas Instruments TMS320 DSPs, ARM, MSP430
Texas Instruments, USA
PC-UX
1985c
Discontinued NEC port of UNIX System III for their APC III and PC-9801 personal computer. It had extensive graphics capability.
NEC APC III, PC-9801
NEC, Japan
KMOS
1985c
Kernel of a Multiprocess Operating System. Designed for educational use in conjunction with a textbook.
-
Milenkovic, USA
-
PCUNIX
1985c
Small, inexpensive UNIX lookalike.
-
Wendin, USA
-
PCVMS
1985c
Small, inexpensive VMS lookalike.
-
Wendin, USA
-
S1
1985c
Modular building block OS adaptible to various configurations. 8080, 8086 and 68000 families.
i8080, i8086 and 68000
Multi-Solutions, USA
-
GEOS
1986
GRAPHIC ENVIRONMENT OPERATING SYSTEM is some very fine OO OS for various kinds of computers (including old 8-bit), that comes with a GUI and various office applications
IBM PC, Commodore, Apple computers
Berkeley Softworks, USA
AIX (12 versions)
1986
Advanced Interactive eXecutive. System V Unix version. Series of proprietary Unix operating systems developed and sold by IBM for several of its computer platforms.
-
IBM, USA
GS/OS (5 versions)
1986
Operating system developed by Apple Computer for its Apple IIGS personal computer that uses the ProDOS filing system.
Apple IIGS
Apple, USA
UMIPS (1 versions)
1986
MIPS Computers' first operating system, a port of Berkeley's BSD4.3 version of UNIX.
RISC CPU
MIPS Computer Systems, USA
S-OS
1986
Minimal DOS for Z80 machines.
Sharp, NEC, MSX, Z80
Japan
EOS (1)
1986
Developed by ETA Systems for use in their ETA-10 line of supercomputers. Written in Cybil.
ETA-10
ETA System, USA
Cronus distributed OS
1986
Object-oriented distributed computing system for heterogenous environments.
-
BBN
-
CTRON
1986
Central and Communication TRON. Mainframe computers and telecommunications TRON.
-
NTT, Japan
FlexOS 68K
1986
Derivative of Concurrent DOS 68K.
Motorola 68000
-
DMS (3)
1986
Disk Management System.
-
AT&T, USA
-
NSMOS
1980s
Version of MOSIX for National Semiconductor VR32 systems.
National Semiconductor VR32
USA
-
Galaxy
1980s
Distributed UNIX-compatible system featuring multi-level IPC and variable-weight processes.
-
University of Tokyo, Japan
-
LANstatic (6 versions)
1987
Peer-to-peer local area network (LAN) operating system for DOS, Microsoft Windows and OS/2. LANtastic supports Ethernet, ARCNET and Token Ring adapters.
-
Artisoft, USA
Oberon (7 versions)
1987
Modular, single-user, single-process, multitasking operating system written in the programming language of the same name. Written in Oberon by Niklaus Wirth.
Ceres and Chameleon workstation projects
ETH Zurich, Switzerland
Windows 2.0
1987
Second version of Microsoft Windows.
IBM PC compatibles
Microsoft, USA
HI-UX/M
1987
UNIX OS that ran on M series hardware. Hitachi developed HI-UX/M by transplanting IN/ix from INTERACTIVE Systems in the United States to the HITAC M series, and adding a number of new functions such as the 4.2 BSD function based on System V release 2 UNIX OS.
Hitachi HITAC M series
Hitachi, Japan
Xenix 386
1987
Xenix 386, Unix System V Release 2 based distribution for the Intel 80386 architecture.
i386
SCO Group, USA
OS-V
1987
Operating system for the V-7000 series of 32-bit-architecture multipurpose computers.
Toshiba V-7000 series
Toshiba, Japan
RISC OS (9 versions)
1987
Originally released in 1987 as Arthur 1.20. First release was to be called Arthur 2, but was renamed to RISC OS 2, and was first sold as RISC OS 2.00 in April 1989.
ARM
Acorn Computers, Castle Technology, RISCOS, UK
OS/2 (1) (12 versions)
1987
Series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer Ed Iacobucci.
IBM PC compatibles
IBM, Microsoft, USA
VM/XA
1987
VM/eXtended Architecture for System/370 with extended virtual memory.
IBM System/370
IBM, USA
System/88 Operating System
1987
IBM version of Stratus/32 OS.
IBM System/88
IBM, Stratus Computer, USA
-
IRIX
1987
Operating system developed by SGI to run on their MIPS workstations and servers.
SGI MIPS workstations
Silicon Graphics, USA
ITOS-VX
1987
Versatile Extended operating system for NEC System 3100A.
NEC System 3100A
NEC, Japan
MINIX (7 versions)
1987
POSIX-compliant (since version 2.0), Unix-like operating system based on a microkernel architecture.
IBM PC compatibles, PS/2, 68000, SPARC, Atari ST, Commodore Amiga, Apple Macintosh, SPARCstation, ARM, Inmos transputer, Intel Management Engine
Andrew S. Tanenbaum
PC-MOS/386
1987
DOS-like, but multiuser/multitasking.
x86
The Software Link, USA
VxWorks
1987
Small footprint, scalable, high-performance RTOS for embedded microprocessor based systems.
x86, x86-64, MIPS, PowerPC, SH-4, ARM
Wind River Systems, USA
L3
1988
Family of second-generation microkernels, generally used to implement Unix-like operating systems, but also used in a variety of other systems.
i386
Jochen Liedtke, Germany
-
A/ROSE
1988
Small embedded operating system that runs on Apple Computer's "Macintosh Coprocessor Platform", an expansion card for the Apple Macintosh.
Apple Macintosh
Apple, USA
A/UX
1988
UNIX System V with BSD extensions. Last version in 1996.
Apple Macintosh
Apple, USA
-
Pink
1988
Code-name for Taligent OS.
Apple Macintosh
Apple, USA
OEM DR-DOS
1988
See DR-DOS.
-
USA
-
DR-DOS (6 versions)
1988
Single-user, single-tasking native DOS derived from Concurrent DOS 6.0.
x86
Digital Research, Caldera, Devicelogics, USA
AIX/370
1988
IBM's fourth attempt to offer Unix-like functionality for their mainframe line.
IBM System/370
Locus Computing, USA
HeliOS
1988
Discontinued Unix-like operating system for parallel computers.
Transputer based systems
Perihelion Software, UK
DUNIX
1988c
Distributed version of UNIX.
-
Bell Labs, USA
-
IBM i
1988
Operating system that runs on IBM Power Systems and on IBM PureSystems. It was named OS/400 when it was introduced with the AS/400 line of computer systems in 1988, was later renamed to i5/OS, and was renamed to IBM i in 2008.
IBM Power Systems, IBM PureSystems
IBM, USA
LynxOS
1988
Unix-like real-time operating system from Lynx Software Technologies (formerly "LynuxWorks"). Sometimes known as the Lynx Operating System, LynxOS features full POSIX conformance and, more recently, Linux compatibility.
Motorola 68010, x86/IA-32, ARM, Freescale PowerPC, PowerPC 970, SPARC LEON
Lynx Real-time Systems, LynuxWorks, Lynx Software Technologies
SpartaDOS X
1988
Aka SpartaDOS 4.0. Disk operating system for the Atari 8-bit family of computers that closely resembles MS-DOS.
Atari 8-bit family
ICD, Fine Tooned Engineering, USA
RISC iX
1988
Discontinued Unix operating system designed to run on the Acorn Archimedes. Derived from BSD 4.3, by Acorn computers, for their ARM family of machines.
Acorn Archimedes
Acorn Computers, UK
VAX VMM
1988
Virtual-machine monitor. TCSEC A1-class, VMM for VAX computers.
DEC VAX
DEC, USA
-
AS/400
1988
Application System/400. Originally named OS/400.
IBM AS/400
IBM, USA
OS/400 (4 versions)
1988
Descendant of System/38 CPF, include System/36 SSP environment.
IBM System/400
IBM, USA
-
VM/XA SP
1988
Virtual Machine/Extended Architecture System Product.
IBM System/370
IBM, USA
-
Flex machine
1988
Tagged, capability machine with OS and other software written in ALGOL 68RS.
-
Royal Signals and Radar Establishment, Malvern, UK
-
VOSK
1988
Small/medium OS for M-620, M-630 and M-640.
Hitachi HITAC M-620, M-630 and M-640
Hitachi, Japan
NeXTSTEP
1988
Unix-based OS based on the Mach microkernel.
NeXT
NeXT, USA
KeyKOS
1988
Capability-based microkernel for IBM mainframes with automated persistence of app data. The development of KeyKOS started under the name GNOSIS during the 1970s.
IBM System/370
Tymshare, Key Logic, USA
SCO OpenServer
1989
Aka Xinuos OpenServer, previously SCO UNIX and SCO Open Desktop (SCO ODT), is a closed source computer operating system developed by Santa Cruz Operation (SCO), later acquired by SCO Group, and now owned by Xinuos.
-
SCO Group, USA
SCO UNIX (1 versions)
1989
First volume commercial product licensed by AT&T to use the UNIX System trademark (1989). Derived from AT&T System V Release 3.2 with an infusion of Xenix device drivers and utilities plus most of the SVR4 features.
-
SCO Group, USA
TSX-32
1989
General purpose 32-bit multi-user multitasking operating system for x86 architecture platform, with a command line user interface. It is compatible with some 16-bit DOS applications and supports file systems FAT16 and FAT32.
x86
S&H Computer Systems, USA
SOS (4)
1989c
SOMIW Operating System. Object-oriented operating system implemented on top of UNIX.
-
INRIA, France
MSP (2)
1989
Maintenance and Support Program. Successor to OS-IV, now MSP/EX also known as Extended System Architecture (EXA), for 31-bit mode.
Fujitsu mainframes
Fujitsu, Japan
EPOC (2 versions)
1989
Mobile operating system developed by Psion. It began as a 16-bit operating system for Psion's own x86-compatible devices, and was later replaced by a 32-bit system for x86 and ARM.
Psion
Psion, UK
OS-9000
1989
Unix-like RTOS. (OS from Microware for Intel x86 based microcomputers; based on OS-9, written in C).
Intel 80386 PC
Microware Systems, USA
-
ROM-DOS
1989
Sometimes called Datalight DOS.
-
Datalight, USA
ASOS
1989
Army Secure Operating System. TCSEC A1-class secure, real-time OS for Ada applications.
-
US Army, USA
OSIV/MSP (2 versions)
1989
Super-large general-purpose operating system.
Fujitsu FACOM M-1800
Fujitsu, Japan
DIP DOS
1989
Operating system for the Atari Portfolio.
Atari Portfolio
DIP, Canada
-
DISTRIX
1989
Message-based distributed version of Unix.
-
University of Cape Town, USA
-
Kuo Chia
1990s
IBM PC compatible traditional Chinese operating system running on DOS.
IBM PC compatibles
China/Taiwan
-
FunOS
1990s
Mostly-functional OS, written in Scheme.
-
Dave Mason, Canada
NOW
1990s
Berkeley Network of Workstations. OS allowing inexpensive workstations to work in cluster, harnessing their resources to match a large computer.
-
U.C. Berkeley, USA
SAN-OS
1990s
Now NX-OS.
-
Cisco Systems, USA
-
PETROS
1990s
Microsoft Windows clone programmed in a proprietary Object Pascal, by Trumpet Software International (producer of the famous Trumpet Winsock). 32-bit operating system for the PC platform.
IBM PC compatibles
Trumpet Software, Tasmania
Schema
1990s
Operating system and operating environment written in Scheme atop a virtual machine which provides an abstraction layer between the hardware and the operating system, implying ease of porting between widely varying processors and other hardware.
-
-
-
LahNOS
1990s
Local area heterogeneous network operating system.
-
Universidad Nacional de San Luis, Spain
-
NTDIOS
1990s
Network Disk Operating System. Working 32-bit, multitasking, OS for x86-based computers, running in protected mode.
x86
NTDIOS, France
schemix
1990s
Implementation of (a subset of) Scheme that runs inside the Linux Kernel OS, so you can dynamically debug your device-drivers.
-
-
SCIOPTA
1990s
Pre-emptive, priority-based direct message passing real-time kernel.
ARM, Cortex-M0-M3-M4, Cortex-R4, Cortex-A5, Cortex-A7, Cortex-A9, Cortex-A53, XScale, Renesas RX100, RX200, RX600, RX700, PowerPC, ColdFire, HCS12, M16C, Aurix TC2xx, BlackFin BF52x, BF70x
Sciopta Systems, Switzerland
Towns OS
1990s
Graphical OS called Towns OS, based on MS-DOS and the Phar Lap DOS extender.
Fujitsu FM Towns
Fujitsu, Japan
ML/OS
1990s
Experimental OS kernel, developed in the context of The Express project, constructed by porting the SML/NJ implementation of Standard ML to run on a bare PC through the OSKit library for the low-level machine management.
-
Olin Shivers, USA
-
SCO Open Desktop
1990s
The first 32-bit graphical user interface for UNIX Systems running on Intel processor-based computers. Based on SCO Unix.
-
Samsung Electronics, Korea
-
PicoBSD
1990s
One floppy version of FreeBSD, configured mainly for networking applications. Superseded by NanoBSD.
x86
Michael Bialecki, Poland
O/OS
1990s
O/OS [MIA] introduces a new GUI concept, and aims at architecturing the OS around reusable, replacable components.
-
Frank Kudermann, Germany
Möbius
1990s
Small 32-bit operating system for Intel i386 processors and above, running in protected mode. In its current state it comprises a small kernel (some might call it a microkernel), a set of drivers for basic PC hardware and a couple of applications. It is called The Möbius because it is hard to type*.
i386
Tim Robinson, UK
Geex!
1990s
Free OS, where the philosophy is to make an OS with a very small footprint, working on old computers.
-
Fabricio Rocha, Brazil
BugOS
1990s
The command line functionality is reminiscent of DOS.
i80386+, MIPS, PPC
Hungary
Ocelot
1990s
Project to create a public-licensed implementation of an operating system similar to UNIX.
-
-
Scout
1990s
Operating system specifically aimed at network appliances (webcams, ip routers).
Digital Alpha and Intel Pentium
University of Arizona, USA
Off (1 versions)
1990s
Distributed microkernel OS that transparently migrate light-weight processes ("shuttles") over the network, communicating by distributed IPC ("Portals"), in a one global distributed shared memory space.
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University Carlos III of Madrid, Spain
Cache Kernel
1990s
Privileged-mode portion of V++, a scalable multiprocessor OS.
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Kenneth Duda, USA
Platform OS
1990s
Operating system wanted to achieve platform-independence through a low-level VM.
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Joel Utting
OJOS
1990s
Original J Operating System, aka Platypus.
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OKE
1990s
Open Kernel Environment. Extension to the Linux OS which allows users other than root to load native and fully optimised code in the kernel.
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Leiden University, Netherlands
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ScreenOS (4 versions)
1990s
Real-time embedded operating system for the NetScreen range of hardware firewall devices from Juniper Networks.
NetScreen
Juniper Networks, Netscreen
Windows 3.0
1990
Second version of Microsoft Windows including a significantly revamped user interface as well as technical improvements to make better use of the memory management capabilities of Intel's 80286 and 80386 processors.
IBM PC compatibles
Microsoft, USA
Opal
1990s
Yet another distributed single (wide) address space (SAS) OS with page-level protection, implemented on top of Mach on Alphas.
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Hank Levy, Ed Lazowska, Jeff Chase, Mike Feeley, USA
SEIUX
1990s
Mostly a clone of the RISC/os.
Sumistation
Sumitomo Electric, Japan
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ShagOS
1990s
Object Oriented system based on a message passing kernel.
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Frank Barrus
ShawnOS
1990s
Small OS, written in 3 months entirely in assembly, that is functional enough to run programs.
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Brian Klock
Turbo-DOS
1990s
One of the primitive operating systems for BK-0010 and BK-0010-01, ideologically close to KMON . File system is not compatible with anything.
Elektronika BK-0010
Russia
GEOS-E
1990s
Based on EDEN OS from Eden Group.
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GeoWorks, USA
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SilkOS
1990s
Lisp environment atop Unix .
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Kelly Murray
Charm
1990s
Nano-kernel OS aimed at the support of Orthogonal Persistence.
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Simulink Real-Time
1990s
Formerly known as xPC Target. Environment for simulating and testing Simulink and Stateflow models in real-time on the physical system.
x86
MathWorks, USA
Agnix
1990s
Small OS kernel for i386, supporting 32-bit protected memory mode, paging, hardware switched tasks, memory tests (RW, ECC, address patterns), PCI bus, devices, PCI IRQ routing, RT timers and network protocols.
i386
Lukas Dembinski
Puma
1990s
Operating system at Sandia National Laboratories with a distributed memory architectures.
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Sandia National Laboratories, USA
GNU Hurd
1990
GNU project's replacement for the Unix OS kernel.
IA-32, i686
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GNUStep
1990s
Unix-like OS, a project to implement a free clone of NeXTStep.
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CircCLe
1990s
Free Common Lisp development and deployment platform for Linux-based GNU systems.
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GO!
1990s
Operaing system based on the idea of building an entire Operating System from software components (based on CORBA and its ORB) that can be replaced and recycled; it also introduces an x86-specific security model based on segmentation and code scanning (an example of a no-kernel system).
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Greg Law, USA
Cisco IOS
1990s
Originally Internetwork Operating System. Family of software used on most Cisco Systems routers and current Cisco network switches.
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Cisco Systems, USA
GOS/EA
1990
Operating system for EX860II, EX870II and EX880II general-purpose computers.
Mitsubishi EX860II, EX870II and EX880II
Mitsubishi, Japan
QuickOS
1990s
Really-quick-realtime-multitasking OS.
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Andreas Ziermann
AO-DOS
1990s
Disk operating system.
Elektronika BK-0010
Russia
RAMON
1990s
Embedded operating system for Soviet personal computers BK-0010 and BK-0010-01. The file system used is compatible with the RT-11 file system.
Elektronika BK-0010
Alexander Ermakov, Russia
Alliance OS
1990s
Was a split from Freedows, its goal was to implement an OS based on isolated components, described with the Corba IDL and communicating through a System ORB.
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AlliedWare Plus
1990s
Operating system developed by Allied Telesis, used on its high-end enterprise network switches.
Allied Telesis routers
Allied Telesis (a.k.a. Allied Telesyn), USA
Moscow
1990s
Object oriented operating system.
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Julian R. Hall, UK
HC-DOS
1990s
Operating system for the Soviet personal computers BK-0010.
Elektronika BK-0010
Russia
Movitz
1990s
Common Lisp OS development platform.
x86
Frode V. Fjeld, Norway
SLK
1990s
Safe Language Kernel Project. OS infrastructure for extensible systems.
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Cornell University, USA
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Amiga Unix (1 versions)
1990
Aka Amix. Amiga ports of Unix System V release 3.2 with Amiga A2500UX and SVR4 with Amiga A3000UX.
Commodore Amiga
Commodore-Amiga, Canada
SMS2
1990s
Derivative from QDOS running on Atari computers in monochrome mode (640x400). It does not get any BASIC interpreter. "SMS" should stand for Small Multitasking System or Small Machine System.
Atari 8-bit family
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Hello
1990s
Prototype OS in Standard ML.
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University of Hawaii, USA
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SMSQ
1990s
Full re-write of QDOS. Developped from SMS2 for the Miracle systems' QXL card.
Sinclair QL
Tony Tebby, France
HelyOS
1990s
Adapted XOberon RTOS with the ARM board support package. Written in Oberon.
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ETHZ, Switzerland
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SMSQ/E
1990s
Born from the fusion of SMSQ and of the level "E" (thus the name) device drivers first developped for the Atari QL emulator sold by Jochen Merz Software.
Sinclair QL
Tony Tebby, France
hOp
1990s
Microkernel OS based on the Run Time System (RTS) of GHC, an Haskell implementation.
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UK
House
1990s
Haskell User's Operating System and Environment, research OS written in Haskell and C.
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Kenny Graunke ?
coniX
1990s
Small romable embedded operating system for ARM processors.
ARM
Nexus, USA
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ANDOS
1990
Russian operating system for Electronika BK-0010, Electronika BK-0011 and Electronika BK-0011M series computers.
Elektronika BK-0010
Alexey Nadezhin and Sergey Kamnev, Russia
OpenTV
1990s
Middlware for digital TV (NVoD, IPPV).
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OpenTV
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LispOS
1990s
Project to revive the still unequalled systems that ran on Lisp Machines of the past (such as the still surviving Genera) this time making it free and running on standard/cheap hardware, instead of proprietary and requiring non-standard/expensive hardware.
Lisp Machines
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Lites
1990s
Unix-like OS of the BSD family as a "singleserver" over the Mach microkernel.
i386, MIPS, and Alpha
Johannes Helander, Finland
OpenZaurus
1990s
Defunct embedded operating system for the Sharp Zaurus personal mobile tool PDA.
ARM, Sharp Zaurus
Sharp, Japan
LittleOS
1990s
Small OS experiment being developed by a group of individuals.
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Pascal Lacroix, Nicolas Regis-Constant, France
LOS
1990s
MIA LOS was meant to be another OS for gamers, like EOS.
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Jonas Berlin, Finland
Unique OS
1995>
Pretty standard, kernel based OS.
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Michael Gerhards, Germany
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Space
1990s
Approach to operating systems which uses multiple protection domains rather than a single kernel to provide operating system services.
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University of Santa Barbara, USA
M/XA ESA
1990
Virtual Machine/Enterprise Systems Architecture.
IBM System/370
IBM, USA
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Spoon
1990s
Operating system based on a microkernel.
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South Africa
Xen
1990s
Virtualisation kernel to which Linux has been ported, NetBSD and XP are being ported, such that you can run as many of each of these OSs (and others if they are ported or written) on a single box.
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University of Cambridge, UK
OS BK-11
1990s
The only “official” OS for the BK-0010/11 computers, supported by the manufacturer, and included in the delivery of the computer.