Operating Systems Timeline

1960s

• 1961
• CTSS
• 1964
• OS/360 (announced)
• 1965
• Multics (announced)
• OS/360 (shipped)
• Tape Operating System (TOS)
• 1966
• DOS/360 (IBM)
• MS/8
• 1967
• ACP (IBM)
• CP/CMS
• ITS
• WAITS
• 1969
• TENEX
• Unix

1970s

• 1970
• DOS/BATCH 11 (PDP-11)
• 1971
• OS/8
• 1972
• MFT
• MVT
• RDOS
• SVS
• VM/CMS
• 1973
• Alto OS
• RSX-11D
• RT-11
• VME
• 1974
• MVS (MVS/XA)
• 1976
• CP/M
• TOPS-20
• 1978
• Apple DOS 3.1 (first Apple OS)
• TripOS
• VMS
• Lisp Machine (CADR)
• 1979
• Apple DOS 3.2
• POS

1980s

• 1980
• Apple DOS 3.3
• OS-9
• QDOS
• SOS
• XDE (Tajo) (Xerox Development Environment)
• Xenix
• 1981
• MS-DOS
• 1982
• SunOS (1.0)
• Ultrix
• 1983
• Lisa OS
• Coherent
• ProDOS
• 1984
• Macintosh OS (System 1.0)
• QNX
• UniCOS
• 1985
• AmigaOS
• Atari TOS
• MIPS OS
• Microsoft Windows 1.0
• 1986
• AIX
• GS-OS
• HP-UX
• 1987
• Arthur
• IRIX (3.0 is first SGI version)
• Minix
• OS/2 (1.0)
• Microsoft Windows 2.0
• 1988
• A/UX (Apple Computer)
• LynxOS
• MVS/ESA
• OS/400
• 1989
• NeXTSTEP (1.0)
• RISC OS
• SCO Unix (release 3)

1990s

• 1990
• BeOS (v1)
• OSF/1
• 1991
• Linux
• 1992
• Solaris (2.0 is first not called SunOS)
• Windows 3.1
• 1993
• Plan 9
• FreeBSD
• NetBSD
• Slackware Linux
• Windows NT 3.1 (First version of NT)
• 1994
• Red Hat Linux
• 1995
• Digital Unix (aka Tru64 )
• OpenBSD
• OS/390
• Windows 95
• 1996
• Debian GNU/Linux (Debian 1.1) http://www.debian.org/doc/manuals/project-history/
• Windows NT 4.0
• 1997
• Inferno
• Mac OS 7.6 (first officially-named Mac OS)
• SkyOS
• 1998
• Mandrakelinux
• Windows 98
• 1999
• Mac OS 8

2000s

• 2000
• AtheOS
• Mac OS 9
• Windows 2000
• Windows Me (Millennium Edition)
• 2001
• Mac OS X
• Windows XP
• z/OS
• 2002
• Syllable
• Red Hat Enterprise Linux
• 2003
• Windows Server 2003
• Fedora Core Linux FC1

External links

• http://www.levenez.com/unix/ -- Timeline of UNIX 1969 and its descendants at present

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