Timeline of Operating Systems - 1980s

1980s

• 1980
  • 86-DOS
  • CTOS
  • NewDos/80
  • OS-9
  • SOS
  • Xenix
• 1981
  • Acorn MOS
  • Business Operating System
  • Aegis SR1 (First Apollo/DOMAIN systems shipped on March 27)
  • PC-DOS
  • Pilot (Xerox Star operating system)
  • MS-DOS
  • UTS
• 1982
  • Commodore DOS
  • LDOS (By Logical Systems, Inc. – For the Radio Shack TRS-80 Models I, II & III)
  • QNX
  • Sun UNIX (later SunOS) 0.7
  • Ultrix
• 1983
  • Lisa Office System 7/7
  • Coherent
  • GNU (project start)
  • Novell NetWare (S-Net)
  • ProDOS
  • SunOS 1.0
• 1984
  • Mac OS (System 1.0)
  • MSX-DOS
  • Sinclair QDOS
  • QNX
  • UNICOS
  • Venix 2.0
• 1985
  • AmigaOS
  • Atari TOS
  • DG/UX
  • MIPS OS
  • Oberon – written in Oberon-2
  • SunOS 2.0
  • Version 8 Unix
  • Windows 1.0
  • Xenix 2.0
• 1986
  • AIX 1.0
  • GS-OS
  • Genera 7.0
  • HP-UX
  • SunOS 3.0
  • GEOS
  • Version 9 Unix
• 1987
  • Arthur
  • IRIX (3.0 is first SGI version)
  • MINIX 1.0
  • BS2000 V9.0
  • OS/2 (1.0)
  • PC-MOS/386
  • Windows 2.0
• 1988
  • A/UX (Apple Computer)
  • RISC iX
  • LynxOS
  • Mac OS (System 6)
  • MVS/ESA
  • OS/2 (1.1)
  • OS/400
  • SpartaDOS X
  • SunOS 4.0
  • TOPS-10 7.04 (Last stable release, July 1988)
  • HeliOS 1.0
• 1989
  • EPOC
  • NEXTSTEP (1.0)
  • OS/2 (1.2)
  • RISC OS (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)
  • SCO UNIX (Release 3)
  • TSX-32
  • Version 10 Unix
  • Xenix 2.3.4 (Last stable release)