BSD/386 0.3.2 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 BSD/OS 1.0 1993 BSD/OS 1.1 1994 BSD/OS 2.0 1995 BSD/OS 2.0.1 BSD/OS 2.1 1996 BSD/OS 3.0 1997 BSD/OS 3.1 BSD/OS 4.0 1998 BSD/OS 4.0.1 1999 BSD/OS 4.1 2000 BSD/OS 4.2 2001 2002 2003 BSD/OS 5.0 2004 2005 2006 2007 2008 2009 2010 2011 (BSDI) (BSDI) (BSDI) (BSDI) (BSDI) (BSDI) (BSDI) (BSDI) (BSDI) (BSDI) (BSDI) BSD/OS 4.3 BSD/OS 4.3.1 february 28, 1992 (BSDI) february 14, 2002 december 21, 2002 may 2, 2003 NetBSD 2.0 RC1 NetBSD 3.0.2 UNIX Time-Sharing System february 14, 1994 january 1995 august 1995 february 13, 1996 february 26, 1997 december 10, 1997 august 17, 1998 march 1, 1999 december 20, 1999 november 29, 2000 NetBSD 2.0 RC5 NetBSD 2.0 NetBSD 2.0.2 NetBSD 2.0.3 NetBSD 2.1 NetBSD 3.0 NetBSD 3.0.1 november 4, 2006 NetBSD 4.0 RC3 NetBSD 4.0 NetBSD 4.0.1 NetBSD 5.0 NetBSD 5.0.1 NetBSD 5.0.2 NetBSD 5.1 september 27, 2004 april 15, 2005 july 24, 2006 october 19, 2007 august 2, 2009 Seventh Edition Modified Ultrix-11 v3.0 Ultrix-11 v3.1 NetBSD 1.2.1 NetBSD NetBSD BSD/OS 5.0 november 12, 2004 december 9, 2004 october 31, 2005 november 2, 2005 december 23, 2005 NetBSD 3.1 december 19, 2007 october 14, 2008 april 29, 2009 february 12, 2010 november 19, 2010 (V7M) V7M 2.1 Ultrix-11 1986 1986 Ultrix 4.2 Ultrix 4.2A Ultrix 4.3 Ultrix 4.3A Ultrix 4.4 Ultrix 4.5 NetBSD 1.3.3 NetBSD 1.4.1 NetBSD 1.4.2 NetBSD 1.4.3 Silver OS may 20, 1997 1.3.1 1.3.2 beta FireFly BSD 1.0 PC-BSD1.1 november 4, 2006 december 1980 october 1981 Acorn RISC iX RISC iX 1.21 november 1995 december 23, 1998 august 26, 1999 march 19, 2000 november 25, 2000 NetBSD 1.6 beta NetBSD 1.6 NetBSD 1.6.2 july 10, 2004 PC-BSD 1.0rc2 PC-BSD 1.11 PC-BSD 1.2 PC-BSD 1.5.1 PC-BSD 7.1.1 march 9, may 29, may 28, 2002 NetBSD 1.6.1 september 2004 PC-BSD 0.7 PC-BSD 0.7.8 PC-BSD 0.8.3 PC-BSD 1.0rc1 PC-BSD 1.0 may 28, PC-BSD 1.3 PC-BSD 1.3.01 PC-BSD 1.4 PC-BSD 1.4.1 PC-BSD 1.5 PC-BSD 7 PC-BSD 7.1 PC-BSD 8.0 PC-BSD 8.1 PC-BSD 8.2 1989 1991 sept. 14, 2002 february 29, 2004 january 20, 2006 april 28, 2006 june 19, 2006 july 12, 2006 april 23, 2008 july 6, 2009 Ultrix 32M 1.0 Ultrix 32M 1.2 Ultrix 32M 2.0 BSD Net/2 NetBSD 1.3 1998 1998 NetBSD 1.5.2 april 14, 2003 may 18, 2005 july 18, 2005 october 23, 2005 november 10, 2005 2006 december 31, 2006 january 6, 2007 september 24, 2007 november 16, 2007 march 12, 2008 september 16, 2008 april 11, 2009 february 22, 2010 july 20, 2010 february 24, 2011 BSD Net/1 NetBSD 0.8 NetBSD 0.9 NetBSD 1.0 NetBSD 1.1 NetBSD 1.2 NetBSD 1.4 NetBSD 1.5 NetBSD 1.5.1 NetBSD 1.5.3 DragonFly BSD DragonFly BSD 1984 1985 1987 (4.3BSD Lite) january 4, july 11, 2001 september DragonFly BSD november 1988 april 20, 1993 august 23, 1993 october 26, 1994 november 26, 1995 october 4, 1996 may 12, 1999 december 6, 2000 july 22, 2002 DragonFly BSD DragonFly BSD (beta) DragonFly DragonFly DragonFly BSD 1.2.0 DragonFly BSD 1.4 DragonFly BSD 1.4.4 DragonFly BSD 1.6.0 DragonFly BSD 1.8.0 DragonFly BSD 1.10.0 1.10.1 DragonFly BSD 1.12.2 DragonFly BSD 2.0 DragonFly BSD 2.2 DragonFly BSD 2.4 DragonFly BSD 2.10.1 june 1991 1998 14, 2001 july 16, 2003 1.0-RC1 DragonFly BSD 1.12 DragonFly BSD 2.2.1 DragonFly BSD 2.6.1 march 5, 2004 june 28, 2004 BSD 1.0 BSD 1.0A march 8, 2005 january 8, 2006 april 23, 2006 july 24, 2006 january 30, 2007 1.8.1 august 6, 2007 august 21, 2007 april 20, 2008 july 20, 2008 february 17, 2009 september 16, 2009 april 26, 2011 FreeBSD FreeBSD FreeBSD 3.0 FreeBSD 4.11 DesktopBSD 1.0-RC1 DesktopBSD 1.0-RC2 DesktopBSD 1.0-RC3 DesktopBSD 1.6 february 26, 2008 april 26, 2009 april 6, 2010 mt Xinu mt Xinu mt Xinu more/BSD mt Xinu mt Xinu FreeBSD 1.0 FreeBSD 1.1 FreeBSD 1.1.5.1 FreeBSD 2.0 FreeBSD 2.2 FreeBSD 3.1 FreeBSD 3.2 FreeBSD 3.3 FreeBSD 3.4 FreeBSD 3.5 FreeBSD 4.2 FreeBSD 4.3 FreeBSD 4.4 FreeBSD 4.5 FreeBSD 4.6 FreeBSD 4.6.2 FreeBSD 4.7 FreeBSD 4.8 FreeBSD 4.9 july 12, 2004 july 15, 2004 DesktopBSD 1.0 march 27, 2007 DesktopBSD 1.6-RC3 DesktopBSD 1.7 may 1994 2.0.5 2.1 october 16, 1998 FreeBSD 4.10 january 25, 2005 july 25, 2005 october 8, 2005 november 26, 2005 march 28, 2006 january 9, 2008 july 19, 1983 (4.2BSD) (4.3BSD) december 1988 mach386 mach 2.6 december 1993 july 1994 november 22, 1994 march 16, 1997 february 15, 1999 may 18, 1999 september 17, 1999 december 20, 1999 june 24, 2000 november 21, 2000 april 22, 2001 september 19, 2001 january 29, 2002 june 15, 2002 august 15, 2002 october 10, 2002 april 3, 2003 october 28, 2003 may 27, 2004 july 25, 2007 september 7, 2009 june 10, 1995 november 19, 1995 4.3BSD-Quasijarus0 4.3BSD-Quasijarus0b 4.3BSD-Quasijarus0c Triance OS FreeBSD 6 FreeBSD 6 FreeBSD 8.0 beta 1 FreeBSD 8.0 FreeBSD 8.1 beta 1 FreeBSD 8.1 FreeBSD 8.2 december 27, 1998 4.3BSD-Quasijarus0a february 15, 2004 1.0-BETA FreeBSD 6.0 FreeBSD 6.1 FreeBSD 6.2 FreeBSD 6.4 july 7, 2009 FreeBSD 8.0 RC1 may 29, 2010 FreeBSD 2.1.5 FreeBSD 2.1.7 FreeBSD 2.2.7 FreeBSD 4.1 FreeBSD 4.1.1 MicroBSD 0.6 december 7, 2003 (announced) BETA 3 FreeBSD 6.3 november 26, 2009 july 23, 2010 february 24, 2011 386 BSD 0.0 386 BSD 0.1 386 BSD 1.0 FreeBSD 2.1.6 FreeBSD 2.2.1 FreeBSD 2.2.5 october 10, 1999 FreeBSD 4.0 MicroBSD 0.1 MicroBSD 0.5 MicroBSD 0.7 beta august 23, 2004 november 4, 2005 may 8, 2006 january 15, 2007 january 18, 2008 november 28, 2008 FreeBSD 7.1 september 21, 2009 february 1992 12 november 1994 july 14, 1996 february 20, 1997 july 22, 1998 FreeBSD 2.2.8 july 27, 2000 september 27, 2000 october 12, 2002 october 27, 2003 july 2, 2005 august 29, 2005 FreeBSD 7.0 FreeBSD 7.2 FreeBSD 7.3 july 14, 1992 2.11BSD 2.11BSD november 16, 1996 march 25, 1997 october 22, 1997 2.11BSD 2.11BSD march 14, 2000 july 14, 2002 august 14, 2002 ekkoBSD 1.0 BETA1B ekkoBSD BETA 2 ekkoBSD 1.0 BETA 2 february 27, 2008 january 5, 2009 FreeBSD 7.4 1BSD 2BSD 2.79BSD 2.8BSD 2.8.1BSD 2.8.2BSD 2.9BSD 2.9.1BSD 2.9BSD-Seismo 2.10BSD 2.10.1BSD 2.11BSD 2.11BSD november 29, 1998 2.11BSD patch 433 2.11BSD patch 444 ekkoBSD PureDarwin may 4, 2009 march 23, 2010 february 24, 2011 august 1985 2.11BSD patch 100 patch 300 patch 400 patch 430 november 25, 2003 february 18, 2004 july 7, 2004 PureDarwin Xmas march 9, 1978 may 10, 1979 april 1980 july 1981 january 1982 september 8, 1982 july 1983 november 1983 april 1987 january 1989 patch 200 february 1996 patch 366 FreeBSD 5.0 beta november 5, 2000 FreeBSD 5.0 FreeBSD 5.0 DP 2 FreeBSD 5.0 february 10, 2003 FreeBSD 5.1 august 6, 2003 FreeBSD 5.3-BETA1 FreeBSD 5.4 2007 iOS 4.3.3 iOS 4.3.5 february 1992 january 1993 january 1998 december 13, 1999 FreeBSD 5.2-BETA FreeBSD 5.2-RC1 FreeBSD 5.2 FreeBSD 5.2.1 FreeBSD 5.3 FreeBSD 5.5 iPod OS 1.1 december 25, 2008 iOS 4.0 iOS 4.0.1 iOS 4.0.2 iOS 4.1 iOS 4.2.1 iOS 4.3 iOS 4.3.1 iOS 4.3.2 iOS 4.3.4 december 1994 february 1997 march 2000 Developer Preview 1 november 18, 2002 january 19, 2003 june 9, 2003 november 26, 2003 december 10, 2003 january 12, 2004 august 22, 2004 may 9, 2005 may 25, 2006 sept. 8, 2010 november 22, 2010 march 25, april 14, may 4, july 15, 2011 july 25, 2011 4.4BSD Lite 1 4.4BSD Lite 2 MirBSD #6 MirBSD #7semel MirBSD #7bis february 25, 2004 MirBSD #8-beta november 6, 2004 sept. 13, 2007 june 21, 2010 july 15, 2010 august 11, 2010 march 9, MIPS OS MIPS OS MIPS OS 4.4BSD Lite 2 TrustedBSD (announced) april 8, 2002 MirBSD MirBSD #0 MirBSD #1 MirBSD #2 MirBSD #3 MirBSD #4 MirBSD #5 MirBSD #7ter MirBSD #7quater MirBSD #8 MirBSD #9 MirBSD #10 2011 2011 2011 2011 march 1, 1994 june 1995 TrustedBSD beta july 8, 2003 september 28, 2003 october 4, 2003 june 14, 2004 october 16, 2004 RISC/os RISC/os 4 RISC/os 5 april 9, 2000 OpenBSD 3.0 OpenBSD 3.1 august 29, 2002 october 11, 2002 november 31, 2002 january 28, 2003 march 2, 2003 april 16, 2003 june 11, 2003 november 22, 2003 OpenBSD 3.5 OpenBSD 3.7 december 23, 2005 OpenBSD 3.9 june 25, 2006 OpenBSD 4.1 OpenBSD 4.2 march 16, 2008 OpenBSD 4.3 OpenBSD 4.5 OpenBSD 4.6 OpenBSD 4.7 OpenBSD OpenBSD 2.0 OpenBSD 2.1 OpenBSD 2.2 OpenBSD 2.3 OpenBSD 2.4 OpenBSD 2.5 OpenBSD 2.6 OpenBSD 2.8 OpenBSD 2.9 november OpenBSD 3.2 OpenBSD 3.3 OpenBSD 3.4 beta OpenBSD 3.4 OpenBSD 3.8 OpenBSD 4.0 OpenBSD 4.4 OpenBSD 4.8 OpenBSD 4.9 OpenBSD 2.7 may 19, 2002 may 1, 2004 OpenBSD 3.6 may 19, 2005 may 1, 2006 may 1, 2007 november 1, 2007 may 1, 2008 may 1, 2009 october 18, 2009 may 19, 2010 may 1, 2011 4.1aBSD 4.3BSD Tahoe 4.3BSD Reno 4.4BSD 4.4BSD Encumbered october 1995 october 1996 june 1, 1997 december 1, 1997 may 19, 1998 december 1, 1998 may 19, 1999 december 1, 1999 june 15, 2000 december 1, 2000 GNU-Darwin june 1, 2001 27, 2001 GNU-Darwin (beta 2.5) november 1, 2002 may 1, 2003 august 11, 2003 november 1, 2003 GNU-Darwin GNU-Darwin 1.1 rc2 october 29, 2004 november 1, 2005 november 1, 2006 iPhone OS 1.1.1 october 31, 2008 iOS 3.2.1 november 1, 2010 3BSD 4.0BSD 4.1BSD 4.1bBSD 4.1cBSD 4.2BSD 4.3BSD 4.4BSD alpha ArchBSD GNU-Darwin 1.0 GNU-Darwin 1.1 GNU-Darwin 1.1 Opteron iPhone OS 1.0 iPhone OS 1.0.2 iPhone OS 1.1.2 iPhone OS 1.1.3 iPhone OS 1.1.4 iPhone OS 2.0 iPhone OS 2.0.1 iPhone OS 2.1 iPhone OS 2.2 iPhone OS 2.2.1 iPhone OS 3.0.1 iPhone OS 3.1 iPhone OS 3.1.2 iPhone OS 3.1.3 iPhone OS 3.2 iOS 3.2.2 OpenBSD 5.0 beta april 1982 june 1988 june 1990 june 1, 1993 june 1993 january 17, 2001 march 12, 2002 1.1 rc1 september 29, 2004 sept. 27, 2007 february 26, 2008 iPhone OS 3.0 july 15, 2010 august 11, 2010 march 1980 october 1980 june 1981 august 1982 december 1982 september 1983 june 1986 HPBSD june 1992 november 1994 QNX RTOS QNX RTOS 6.1.0 QNX 6.2 january 10, 2003 QNX 6.2.1 (Momentics) october 8, 2003 may 26, 2006 june 29, 2007 august 21, 2007 november 1, 2007 january 15, 2008 july 11, 2008 august 4, 2008 september 12, 2008 QNX Neutrino RTOS 6.4.0 november 21, 2008 january 27, 2009 june 17, 2009 july 31, 2009 september 9, 2009 october 8, 2009 february 2, 2010 april 3, 2010 july 18, 2011 HPBSD 1.0 HPBSD 2.0 HPBSD QNX/Neutrino 1.0 QNX/Neutrino 2.0 QNX/Neutrino 2.10 QNX RTOS 6 QNX 6.2 (patch A) QNX 6.3 august 17, 2004 QNX Neutrino RTOS 6.4.1 1987 1996 1998 (QRTP) 6.1.0 patch A (Momentics) october 18, 2002 february 18, 2003 june 3, 2004 october 30, 2008 may 2009 QNX Neutrino RTOS 6.5.0 QUNIX QNX beta april 1988 QNX 4.0 april 1993 QNX 4.1 january 18, 2001 OpenDarwin OpenDarwin 7.2.1 FreeDarwin PR1 AppleTV 1.0 AppleTV 2.0 AppleTV 2.0.1 AppleTV 2.0.2 AppleTV 2.4 AppleTV 3.0.1 QNX 1.0 QNX 2.0 QNX 2.21 QNX 4.2 QNX 4.25 xMach DR 01 xMach current september 28, 2001 june 4, 2002 OpenDarwin-20030212 AppleTV 1.1 AppleTV 2.1 AppleTV 2.2 AppleTV 2.3 AppleTV 2.3.1 AppleTV 3.0 AppleTV 3.0.2 july 2010 UCLA Secure Unix 1981 1983 1984 1990 1994 QNX 4.22 QNX 4.24 xMach august 6, 2000 march 16, 2001 6.6.1 july 16, 2004 march 16, 2006 march 21, 2007 june 20, 2007 feb. 12, 2008 march 28, 2008 april 14, 2008 july 10, 2008 october 2, 2008 november 20, 2008 february 25, 2009 june 24, 2009 november 7, 2009 february 10, 2010 IBM AOS AOS Reno AOS Lite Darwin Darwin 6.0.1 Darwin february 17, 2003 Darwin 6.7 Darwin 8.10 Darwin 8.11 october 29, 2009 Darwin 11.0 Darwin 11.1 1979 Darwin 0.1 Darwin 0.2 Darwin 0.3 Darwin 1.0 Darwin 1.1 Darwin 1.2.1 Darwin 1.3.1 Darwin 1.4.1 Darwin 5.5 Darwin 6.0.2 Darwin 6.5 Darwin 6.6 may 27, 2003 Darwin 6.8 Darwin 8.0b1 Darwin 8.0.1 Darwin 8.1 Darwin 8.2 Darwin 8.3 Darwin 8.4 Darwin 8.5 Darwin 8.6 Darwin 8.7 Darwin 8.8 Darwin 8.9 Darwin 10.0 Darwin 10.1 Darwin 10.2 Darwin 10.3 Darwin 10.4 Darwin 10.5 Darwin 10.6 Darwin 10.7 Darwin 10.8 july 20, august 25, 1988 1992 1995 october 1, 2001 Darwin 5.1 5.2 Darwin 5.3 Darwin 5.4 sept. 23, 2002 oct. 28, 2002 6.1 Darwin 6.2 Darwin 6.3 Darwin 6.4 may 14, 2003 sept. 22, 2003 october 30, 2007 november 14, 2008 The Wollongong Group Eunice 2 Eunice 4.2 march 16, 1999 may 13, 1999 august 16, 1999 april 5, 2000 may 15, 2000 november 15, 2000 april 13, 2001 april 15, 2003 Darwin 7.0 Preview sept. 22, 2003 Darwin Darwin 7.3 Darwin 7.4 september 2004 april 29, 2005 may 16, 2005 july 12, 2005 october 31, 2005 jan. 10, 2006 february 15, 2006 april 10, 2006 august 16, 2006 november 8, 2006 april 17, 2007 august 28, 2009 september 15, 2009 november 13, 2009 april 1, 2010 june 17, 2010 november 17, 2010 january 9, 2011 march 28, 2011 june 27, 2011 2011 2011 Eunice 4.3 Lites 1.0 Lites 1.1 Lites 1.1u3 Lites Darwin 7.0 Darwin 7.0.1 Darwin 7.2 Darwin 7.5 Darwin 7.6 Darwin 7.7 Darwin 7.8 Darwin 7.9 Darwin 9.0 Darwin 9.1 Darwin 9.2 Darwin 9.3 Darwin 9.4 Darwin 9.5 Darwin 9.6 Darwin 9.7 Darwin 9.8 SRI Eunice Eunice (Edition 7) 1982 1985 1987 SunOS 4.1.1 SunOS 4.1.3 SunOS 4.1.3_U1 SunOS 4.1.3_U1b SunOS 4.1.4 Lites Mac OS X Mac OS X june 25, 2003 7.1 march 15, 2004 may 26, 2004 november 15, 2007 SunOS 1.1 SunOS 3.5 SunOS 4.1.2 february 28, 1995 march 24, 1995 march 30, 1996 Mac OS X (DP1) Mac OS X (DP4) Mac OS X 10.0 Mac OS X 10.0.4 Mac OS X 10.1 Mac OS X Mac OS X Mac OS X 10.1.4 Mac OS X Mac OS X 10.2 Mac OS X Mac OS X Mac OS X october 24, 2003 november 14, 2003 december 19, 2003 august 10, 2004 Mac OS X 10.4 (Tiger beta 2) november 6, 2004 december 15, 2004 february 9, 2005 april 15, 2005 Mac OS X 10.4 Mac OS X 10.4.1 Mac OS X Mac OS X Mac OS X Mac OS X Mac OS X Mac OS X 10.4.7 Mac OS X 10.4.9 Mac OS X 10.4.10 october 30, 2007 february 13, 2008 june 19, 2008 july 18, 2008 september 17, 2008 december 18, 2008 may 14, 2009 august 10, 2009 1980 SunOS 1.0 SunOS 1.2 SunOS 3.0 SunOS 3.2 SunOS 4.0 SunOS 4.0.3 SunOS 4.1 (Solaris 1) (Solaris 1.0.1) (Solaris 1.1a) (Solaris 1.1.1) (Solaris 1.1.1B) (Solaris 1.1.2) Mac OS X (DP2) Mac OS X (DP3) Mac OS X (beta) Mac OS X 10.1.3 Mac OS X 10.2.2 Mac OS X 10.2.3 Mac OS X 10.2.4 10.2.5 10.2.6 Mac OS X 10.4 (Tiger beta) Mac OS X 10.4.8 Mac OS X 10.4.11 Mac OS X 10.6.8 UniSoft april 1984 SunOS 2.0 1988 may 10, 1999 may 15, 2000 (Cheetah) june 22, 2001 (Puma) 10.1.1 10.1.2 april 17, 2002 10.1.5 (Jaguar) 10.2.1 10.2.7 10.2.8 october 30, 2004 april 29, 2005 may 16, 2005 10.4.2 10.4.3 10.4.4 10.4.5 10.4.6 june 27, 2006 march 13, 2007 june 20, 2007 Mac OS X 10.6 Mac OS X 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(SunOS 5.1) march 1999 may 1999 august 1999 november 1999 (beta) 6/00 (su1) october 2000 february 20, 2001 may 2001 july 2001 october 2001 february 2002 december 2002 Mac OS X 10.3.4 Mac OS X 10.3.5 Mac OS X 10.3.7 Mac OS X 10.3.8 november 15, 2007 february 11, 2008 may 28, 2008 june 30, 2008 september 15, 2008 december 15, 2008 may 12, 2009 august 5, 2009 january 1978 november 1979 1983 (SunOS 5.0) december 1992 may 1993 november 1993 december 1994 november 1995 may 1996 august 1997 october 27, 1998 january 26, 2000 Mac OS X 10.3 Mac OS X 10.3.1 Mac OS X 10.3.2 Server Mac OS X 10.3.3 Server Mac OS X 10.3.6 Server Mac OS X 10.3.9 Server august 7, 2006 october 26, 2007 february 24, 2011 10.7 10.7.1 april 1981 nov 2, 1999 june 2000 Mac OS X Mac OS X Server 10.3 beta (Panther) Server Server Server Server BRL Unix BRL Unix july 1992 Mac OS X Server Mac OS X Server Mac OS X Mac OS X Server Mac OS X Server Mac OS X Server Mac OS X Server Mac OS X Mac OS X Mac OS X Server Mac OS X Server Mac 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10.1.2 10.1.3 10.1.4 10.1.5 Server 10.2 Server 10.2.1 10.2.3 10.2.4 10.2.5 10.2.6 october 24, 2003 november 10, 2003 Server Server Server Server Server Server Server Server Server Server Server Server Server Server Update 1.1 Server Server Server v1.1 may 1977 july 1979 september 18, 1989 sept. 18, 1990 september 1992 may 25, 1993 october 1993 february 1995 july 22, 1996 december 1996 january 1997 september, 1997 may, 1998 march 16, 1999 july 22, 1999 january 14, 2000 october 27, 2000 november 10.2.2 10.2.8 (Tiger beta) april 29, 2005 may 19, 2005 Server november 14, 2007 Server Server Server Update 1.1 Server UNIX 32V 1985 1986 october 12, 1988 march 25, 1991 may 21, 2001 july 3, 2001 september 29, 2001 january 17, 2002 february 20, 2002 april 15, 2002 july 1, 2002 august 13, 2002 sept. 18, 2002 november 11, 2002 december 19, 2002 february 24, 2003 april 14, 2003 may 8, 2003 july 12, 2005 october 31, 2005 january 10, 2006 february 15, 2006 april 3, 2006 june 27, 2006 march 13, 2007 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Time-Sharing System UNIX Time-Sharing System OSF/1 Digital Unix Digital Unix 4.0 Digital Unix Digital Unix 4.0D Tru64 Unix V4.0F Tru64 Unix V5.0 Tru64 Unix V4.0G Tru64 Unix V5.1 Tru64 Unix V5.1A may 5, 2002 Tru64 Unix V5.1B july 29, 2003 Tru64 Unix V5.1B-1 Tru64 Unix V5.1B-2 november 15, 2004 Tru64 Unix V5.1B-5 october 8, 2009 UNICS First Edition (V1) Second Edition (V2) Third Edition (V3) Fourth Edition (V4) Fifth Edition (V5) Sixth Edition (V6) Seventh Edition (V7) Eighth Edition (V8) Ninth Edition (V9) Tenth Edition (V10) OSF/1 OSF/1.3 (DEC OSF/1 V4) 4.0A 4.0B V5.1B-3 Tru64 Unix V5.1B-4 Tru64 Unix V5.1B-6 1990 1992 june 1994 (DEC OSF/1 AXP) december 1997 february 1, 1999 august 12, 1999 may 2000 august 2000 september 2001 january 20, 2003 october 20, 2003 may 2004 march 2009 september 1969 november 3, 1971 june 12, 1972 february 1973 november 1973 june 1974 may 1975 january 1979 february 1985 september 1986 Sinix 2.0 Sinix 2.1 october 1989 Sinix 5.20 Sinix 5.40 Sinix 5.41 march 1995 Sinix ReliantUnix 5.43 may 1996 september 1996 december 1996 ReliantUnix 5.44 ReliantUnix 5.45 Unicos/mp 1.0 Unicos/mp 2.0 Unicos/mp 2.1 Unicos/mp 2.2 Unicos/mp 2.4 Unicos/mp 2.5 Unicos/mp 3.0 june 2, 2005 december 2006 october 2010 Sinix 1988 1992 Sinix 5.42 Unicos/mp 2.3 Unicos/mp 3.1 1987 1990 1993 IRIX 6.1 1995 1997 IRIX 6.5 IRIX 6.5.1M IRIX 6.5.2 2000 august 23, 2002 december 20, 2002 IRIX 6.5.19 march 17, 2003 july 2003 october 2003 IRIX 6.5.23 march 2004 november 2004 march 2005 april 2006 IRIX IRIX 2.0 IRIX 3.0 IRIX 4.0 IRIX 4.0.4 IRIX 5.0 IRIX 5.1 IRIX 5.2 IRIX 5.3 IRIX 6.0 IRIX 6.2 IRIX 6.3 IRIX 6.4 IRIX 6.5.3 IRIX 6.5.4 IRIX 6.5.6 IRIX 6.5.7 IRIX 6.5.8 IRIX 6.5.9 IRIX 6.5.10 IRIX 6.5.15 IRIX 6.5.18 IRIX 6.5.20 IRIX 6.5.21 IRIX 6.5.25 IRIX 6.5.29 IRIX 6.5.30 july 1995 march 1996 june 15, 1998 august 14, 1998 november 17, 1998 IRIX 6.5.5 IRIX 6.5.11 IRIX 6.5.12 IRIX 6.5.13 IRIX 6.5.14 IRIX 6.5.16 IRIX 6.5.17 february 5, 2003 IRIX 6.5.22 february 4, 2004 IRIX 6.5.24 IRIX 6.5.26 IRIX 6.5.27 IRIX 6.5.28 1986 NonStop-UX november 18, 1987 june 10, 1988 NonStop-UX B00 september 1991 march 1992 march 1993 september 1993 march 1994 december 1994 december 1994 september 1996 november 1996 february 9, 1999 may 11, 1999 august 6, 1999 november 10, 1999 february 10, 2000 may 22, 2000 august 9, 2000 november 8, 2000 february 2, 2001 august 8, 2001 november 7, 2001 february 6, 2002 may 8, 2002 august 7, 2002 NonStop-UX C61 november 8, 2002 may 7, 2003 august 6, 2003 august 4, 2004 february 2, 2005 february 8, 2006 august 16, 2006 NonStop-UX B22 NonStop-UX B32 NonStop-UX Cxx NonStop-UX C40 NonStop-UX C41 NonStop-UX C50 NonStop-UX C51 may 9, 2001 NonStop-UX C62 november 5, 2003 NonStop-UX C63 may 5, 2004 november 3, 2004 august 3, 2005 OpenServer 6 april 10, 1987 august 22, 1989 NonStop-UX B31 august 20, 1997 NonStop-UX C52 NonStop-UX C53 NonStop-UX C60 october 2, 2002 OpenServer 6 PWB 2.0 SCO XENIX november 22, 1993 SCO UNIX 3.2.4 november 1, 1994 june 12, 1995 february 1996 november 14, 1997 june 3, 1998 december 8, 1998 april 20, 2000 OpenServer 5.0.6 OpenServer 5.0.6a january 17, 2003 OpenServer 5.0.7 Update Pack 1 february 6, 2004 OpenServer 6 OpenServer 6 Maintenance Pack 3 OpenServer 6 Solaris 11 PWB/UNIX PWB 1.0 PWB 1.2 XENIX OS XENIX 3.0 SCO XENIX 3.0 SCO XENIX System V/386 SCO XENIX System OpenServer 5.0.5a october 19, 2001 may 3, 2002 OpenServer 5.0.7 (announced) OpenServer 5.0.7 OpenServer 5.0.7 Update Pack 3 OpenServer 6 Maintenance Pack 2 1974 1978 XENIX 2.3 april 1983 february 1984 System V/286 SCO UNIX System V/386 (Open Desktop) OpenServer 5.0 OpenServer 5.0.2 OpenServer 5.0.4 OpenServer 5.0.5 august 21, 2000 june 8, 2001 february 24, 2003 july 31, 2003 OpenServer 5.0.7 Update Pack 2 (Legend beta) Maintenance Pack 1 november 2, 2007 Maintenance Pack 4 Express 2010.11 july 1, 1977 august 25, 1980 october 1987 V/386 release 2.3.4 may 9, 1995 may 1997 february 1999 august 26, 2002 Debian GNU/Hurd Debian GNU/Hurd K5 july 9, 2004 Debian 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3.2.4 Linux 1.1.0 march 2, 1995 30, 1996 may 29, 2006 april 13, 2007 june 8, 2007 march 26, 2009 june 16, 2010 october 4, 2010 Minix 1.0 april 6, 1994 october 6, 1994 Minix 2.0.3 october 24, 2005 november 5, 2009 february 8, 2010 Minix 1.5 Minix 1.7.2 Minix 2.0.0 Minix 2.0.2 may 22, 2001 Minix 2.0.4 Minix 1987 january 1997 AIX 6 open beta AIX 6.1 AIX 6.1 SP3 AIX 6.1 TL1 AIX 6.1 TL2 AIX 6.1 TL3 AIX 7 open beta AIX 7.1 AIX/ESA 1 AIX/ESA 2.1 december 1992 AIX/ESA 2.2 march 1996 december 1998 november 23, 2003 AIX 5L v5.1 ML 9 AIX 5L 5.0 AIX 5L v5.1 july 11, 2007 november 9, 2007 january 29, 2008 may 30, 2008 november 2008 may 2009 july 14, 2010 september 10, 2010 1991 1992 1994 Monterey september 2005 AIX 5L v5.2 AIX 5L v5.2 TL 10 AIX/RT 2 AIX/RT 2.2.1 AIX/6000 v3 AIX 4.1.5 october 24, 2000 may 4, 2001 AIX 5L v5.2 AIX 5L v5.2 ML 2 AIX 5L v5.2 ML 3 AIX 5L v5.2 ML 4 AIX 5L v5.2 ML 5 AIX 5L v5.2 ML 6 AIX 5L v5.2 TL 9 AIX 5L v5.2 TL 10 Note 1 : an arrow indicates an inheritance like a compatibility, it is not only a matter of source code. AIX/RT 2.1.2 AIX 3.1 AIX 3.2 AIX 3.2.4 AIX 3.2.5 AIX 4.1 AIX 4.1.1 AIX 4.1.3 AIX 4.1.4 (announced) Monterey beta AIX 5L v5.2 Technology Level 8 Service Pack Open Systems 1986 1987 1989 1990 july 1993 october 28, 1994 november 8, 1996 Minix-VMD 1.7.0 october 18, 2002 Maintenance Level 1 october 2003 may 2004 december 2004 january 2005 may 2005 AIX 5L v5.2 ML 7 august 2006 june 2007 1990 Coherent 4.0 Coherent 4.2 october 15, 1993 august 12, 1994 Coherent 4.2.10 july 7, 1995 october 20, 1995 october 1998 september 2005 february 2006 january 2009 september 4, 2011 Note 2 : this diagram shows complete systems and [micro]kernels like Mach, Linux, the Hurd... This is because Coherent Coherent 3.0 AIX 4.2 AIX 4.2.1 november 9, 2000 may 2003 may 1992 may 1993 1995 april 25, 1997 AIX 5L v5.3 AIX 5L v5.3 AIX 5L v5.3 AIX 5L v5.3 © Éric Lévénez 1998-2011 sometimes kernel versions are more appropriate to see the evolution of the system. june 1983 may 17, 1996 AIX 4.3.2 AIX 4.3.3 Maintenance Level 11 AIX 5L v5.3 ML 2 AIX 5L v5.3 ML 3 AIX 5L v5.3 TL5 AIX 5L v5.3 TL6 AIX 5L v5.3 TL7 AIX 5L v5.3 TL8 AIX 5L v5.3 TL9 AIX 5L v5.3 TL10 A/UX A/UX 1.0 A/UX 2.0 A/UX 3.0 A/UX 3.0.1 A/UX 3.1.1 AIX 4.3 AIX 4.3.1 AIX 4.3.3 (announced) AIX 5L v5.3.0 Technology Level 4 Enhanced