Independent — operating systems family

29 operating systems in the independent family.

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StatusAlive Maintenance Dormant Dead Lost Superseded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
CTSSCompatible Time-Sharing System	1961–1964	Dead	Independent	Fernando Corbató / MIT
GCOSGECOS, General Comprehensive Operating System	1962–	Maintenance	Independent	GE → Honeywell → Bull
ITSIncompatible Timesharing System	1967–1990	Dead	Independent	MIT AI Lab
TENEX	1969–	Dead	Independent	BBN
RSTS/E	1971–	Dead	Independent	DEC
RSX-11	1972–	Dead	Independent	DEC
RT-11	1973–	Dead	Independent	DEC
TOPS-20	1976–	Dead	Independent	DEC
Apple DOS	1978–1983	Dead	Independent	Apple / Paul Laughton
Domain/OSApollo DOMAIN	1981–1991	Dead	Independent	Apollo Computer
QNX	1982–	Alive	Independent	Dan Dodge & Gordon Bell / BlackBerry
ProDOS	1983–1993	Dead	Independent	Apple
AmigaOS	1985–	Maintenance	Independent	Carl Sassenrath / Commodore
GEOS	1986–1990	Dead	Independent	Berkeley Softworks
MINIX	1987–	Alive	Independent	Andrew Tanenbaum / VU Amsterdam
RISC OS	1987–	Maintenance	Independent	Acorn → RISC OS Open
IBM iOS/400, i5/OS	1988–	Alive	Independent	IBM
Coherent	1990–	Dead	Independent	Mark Williams Company
GNU Hurd	1990–	Dormant	Independent	GNU Project / FSF
BeOS	1995–2001	Dead	Independent	Be Inc. (Jean-Louis Gassée)
Inferno	1996–	Dead	Independent	Bell Labs / Vita Nuova
SymbianEPOC32	1997–2013	Dead	Independent	Psion → Symbian Ltd / Nokia
MenuetOS	2000–	Dormant	Independent	Ville Turjanmaa
Haiku	2001–	Alive	Independent	Haiku Project
KolibriOS	2004–	Alive	Independent	KolibriOS team
TempleOS	2013–	Dead	Independent	Terry A. Davis
SerenityOS	2018–	Alive	Independent	Andreas Kling / community
ZealOS	2020–	Alive	Independent	ZealOS team
Shrine	2021–	Dormant	Independent	minexew