Operating systems

72 entries, ordered by year of first appearance. Filter by decade, family, or status.

Decade1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

FamilyIndependent 29 Unix 16 BSD 5 Linux 4 Windows 4 DOS 3 OS/360 3 OS/2 2 VM 2 CP/M 1 MCP 1 Multics 1 VMS 1

StatusAlive Maintenance Dormant Dead Lost Superseded

Name	Years	Status	Family	Creator / origin
Burroughs MCPClearPath MCP	1961–	Maintenance	MCP	Burroughs → Unisys
CTSSCompatible Time-Sharing System	1961–1964	Dead	Independent	Fernando Corbató / MIT
GCOSGECOS, General Comprehensive Operating System	1962–	Maintenance	Independent	GE → Honeywell → Bull
OS/360	1966–1972	Dead	OS/360	IBM
CP-67/CMS	1967–	Dead	VM	IBM Cambridge Scientific Center
ITSIncompatible Timesharing System	1967–1990	Dead	Independent	MIT AI Lab
Multics	1969–2000	Dead	Multics	MIT, GE & Bell Labs
Research UnixUNIX, V6/V7	1969–	Superseded	Unix	Thompson & Ritchie / Bell Labs
TENEX	1969–	Dead	Independent	BBN
RSTS/E	1971–	Dead	Independent	DEC
RSX-11	1972–	Dead	Independent	DEC
z/VM	1972–	Alive	VM	IBM
RT-11	1973–	Dead	Independent	DEC
CP/M	1974–1983	Dead	CP/M	Gary Kildall / Digital Research
MVS	1974–	Superseded	OS/360	IBM
TOPS-20	1976–	Dead	Independent	DEC
BSDBerkeley UNIX, 4.3BSD	1977–	Superseded	BSD	UC Berkeley CSRG
OpenVMSVMS	1977–	Maintenance	VMS	DEC → VSI
Apple DOS	1978–1983	Dead	Independent	Apple / Paul Laughton
Xenix	1980–	Dead	Unix	Microsoft / SCO
Domain/OSApollo DOMAIN	1981–1991	Dead	Independent	Apollo Computer
MS-DOSPC DOS	1981–2000	Dead	DOS	Tim Paterson / Microsoft & IBM
QNX	1982–	Alive	Independent	Dan Dodge & Gordon Bell / BlackBerry
SunOS	1982–	Superseded	Unix	Sun Microsystems
HP-UX	1983–	Maintenance	Unix	HP
ProDOS	1983–1993	Dead	Independent	Apple
AmigaOS	1985–	Maintenance	Independent	Carl Sassenrath / Commodore
Atari TOS	1985–1994	Dead	DOS	Atari
Windows (classic)Windows 1.0–9x	1985–	Superseded	Windows	Microsoft
AIX	1986–	Alive	Unix	IBM
GEOS	1986–1990	Dead	Independent	Berkeley Softworks
MINIX	1987–	Alive	Independent	Andrew Tanenbaum / VU Amsterdam
OS/2	1987–	Dead	OS/2	IBM & Microsoft
RISC OS	1987–	Maintenance	Independent	Acorn → RISC OS Open
A/UX	1988–1995	Dead	Unix	Apple
IBM iOS/400, i5/OS	1988–	Alive	Independent	IBM
IRIX	1988–2006	Dead	Unix	SGI
NeXTSTEP	1989–	Superseded	Unix	NeXT
SCO OpenServer	1989–	Dead	Unix	SCO
Coherent	1990–	Dead	Independent	Mark Williams Company
GNU Hurd	1990–	Dormant	Independent	GNU Project / FSF
Linux	1991–	Alive	Linux	Linus Torvalds / kernel community
Plan 9 from Bell LabsPlan 9	1992–	Dormant	Unix	Bell Labs (Pike, Thompson et al)
Solaris	1992–	Maintenance	Unix	Sun Microsystems → Oracle
Tru64 UNIXDigital UNIX, OSF/1	1992–2012	Dead	Unix	DEC → Compaq → HP
FreeBSD	1993–	Alive	BSD	FreeBSD Project
NetBSD	1993–	Alive	BSD	NetBSD Project
Windows NT / Windows	1993–	Alive	Windows	David Cutler team / Microsoft
FreeDOS	1994–	Maintenance	DOS	Jim Hall & community
BeOS	1995–2001	Dead	Independent	Be Inc. (Jean-Louis Gassée)
Inferno	1996–	Dead	Independent	Bell Labs / Vita Nuova
OpenBSD	1996–	Alive	BSD	Theo de Raadt / OpenBSD Project
Windows CE	1996–	Dead	Windows	Microsoft
SymbianEPOC32	1997–2013	Dead	Independent	Psion → Symbian Ltd / Nokia
ReactOS	1998–	Alive	Windows	ReactOS Project
MenuetOS	2000–	Dormant	Independent	Ville Turjanmaa
z/OS	2000–	Alive	OS/360	IBM
Haiku	2001–	Alive	Independent	Haiku Project
macOSMac OS X	2001–	Alive	Unix	Apple
DragonFly BSD	2003–	Alive	BSD	Matthew Dillon
KolibriOS	2004–	Alive	Independent	KolibriOS team
iOS	2007–	Alive	Unix	Apple
Android	2008–	Alive	Linux	Android Inc. → Google / Open Handset Alliance
OpenSolaris	2008–2010	Dead	Unix	Sun Microsystems
webOS	2009–	Maintenance	Linux	Palm → HP → LG
illumos	2010–	Alive	Unix	illumos community
ChromeOS	2011–	Alive	Linux	Google
TempleOS	2013–	Dead	Independent	Terry A. Davis
ArcaOS	2017–	Maintenance	OS/2	Arca Noae
SerenityOS	2018–	Alive	Independent	Andreas Kling / community
ZealOS	2020–	Alive	Independent	ZealOS team
Shrine	2021–	Dormant	Independent	minexew