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OpenServer6.x
UnixWare7.x(System VR5)
HP-UX11i+
1969
1971 to 1973
1974 to 1975
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001 to 2004
2006 to 2007
2008
2005
2009
2010
2011
2012 to 2015
2016
2017
Open Source
Mixed/Shared Source
Closed Source
No future releases
HP-UX1.0 to 1.2
OpenSolaris& derivatives(illumos, etc.)
System III
System VR1 to R2
OpenServer5.0.5 to 5.0.7
OpenServer5.0 to 5.04
SCO Unix3.2.4
SCO XenixV/386
SCO XenixV/386
SCO XenixV/286
SCO Xenix
Xenix3.0
Xenix1.0 to 2.3
PWB/Unix
AIX1.0
AIX3.0-7.2
OpenBSD2.3-6.1
OpenBSD1.0 to 2.2
SunOS1.2 to 3.0
SunOS1 to 1.1
Unix/32V
UnixVersion 1 to 4
UnixVersion 5 to 6
UnixVersion 7
Unnamed PDP-7 operating system
BSD1.0 to 2.0
BSD3.0 to 4.1
BSD 4.2
UnixVersion 8
Unix9 and 10(last versionsfromBell Labs)
NexTSTEP/OPENSTEP1.0 to 4.0
Mac OS XServer
Mac OS X,OS X,macOS10.0 to 10.12(Darwin1.2.1 to 17)
Minix1.x
Minix2.x
Minix3.1.0-3.4.0
Linux2.x
Linux0.95 to 1.2.x
Linux 0.0.1
BSD4.4 to4.4 lite2
NetBSD0.8 to 1.0
NetBSD1.1 to 1.2
NetBSD 1.3
NetBSD1.3-7.1
FreeBSD1.0 to 2.2.x
386BSD
BSD NET/2
Solaris10
Solaris11.0-11.3
System VR4
Solaris2.1 to 9
BSD 4.3
SunOS4
HP-UX2.0 to 3.0
HP-UX6 to 11
System VR3
UnixWare1.x to 2.x(System VR4.2)
BSD 4.3Tahoe
BSD 4.3Reno
FreeBSD3.0 to 3.2
FreeBSD3.3-11.x
Linux3.x
Linux4.x
OpenServer10.x
DragonFlyBSD1.0 to 4.8