OpenServer 6.xUnixWare 7.x (System V R5)HP-UX 11i+19691971 to 19731974 to 1975197819791980198119821983198419851986198719881989199019911992199319941995199619971998199920002001 to 20042006 to 2007200820052009201020112012 to 201520162017Open sourceMixed/shared sourceClosed sourceHP-UX 1.0 to 1.2OpenSolaris & derivatives (illumos, etc.)System IIISystem V R1 to R2OpenServer 5.0.5 to 5.0.7OpenServer 5.0 to 5.04SCO UNIX 3.2.4SCO Xenix V/386SCO Xenix V/386SCO Xenix V/286SCO XenixXenix 3.0Xenix 1.0 to 2.3PWB/UnixAIX 1.0AIX 3.0-7.2OpenBSD 2.3-6.1OpenBSD 1.0 to 2.2SunOS 1.2 to 3.0SunOS 1 to 1.1Unix/32VUnix Version 1 to 4Unix Version 5 to 6Unix Version 7Unnamed PDP-7 operating systemBSD 1.0 to 2.0BSD 3.0 to 4.1BSD 4.2Unix Version 8Unix 9 and 10 (last versions from Bell Labs)NexTSTEP/ OPENSTEP 1.0 to 4.0Mac OS X ServerMac OS X, OS X, macOS 10.0 to 10.12 (Darwin 1.2.1 to 17)Minix 1.xMinix 2.xMinix 3.1.0-3.4.0Linux 2.xLinux 0.95 to 1.2.xLinux 0.0.1BSD 4.4-Lite & Lite Release 2NetBSD 0.8 to 1.0NetBSD 1.1 to 1.2NetBSD 1.3NetBSD 1.3-7.1FreeBSD 1.0 to 2.2.x386BSDBSD Net/2Solaris 10Solaris 11.0-11.3System V R4Solaris 2.1 to 9BSD 4.3SunOS 4HP-UX 2.0 to 3.0HP-UX 6 to 11System V R3UnixWare 1.x to 2.x (System V R4.2)BSD 4.3 TahoeBSD 4.3 RenoFreeBSD 3.0 to 3.2FreeBSD 3.3-11.xLinux 3.xLinux 4.xOpenServer 10.xDragonFly BSD 1.0 to 4.8BSD Net/1Unix-like systems