List of operating systems
Operating systems can be categorized by technology (Unix-like or others such as Windows), ownership and license (proprietary or open source ), working state (historic like DOS and OS/2 or current like Linux and Windows), application (general like Linux, Windows), desktop only (DOS, Apple), mainframe only (AIX ), real-time or embedded only (QNX ), PDA , or purpose (production, research, hobby). Naturally, these groupings overlap.
See also Category:Operating systems , , and Category:Free software .
Early, and historically important
Early, proprietary microcomputer OS
Apple Computer (initial version was ROM'd firmware together with Integer BASIC; later versions included a Microsoft BASIC)
Business Operating System (BOS) - cross platform, command-line based
Commodore PET , Commodore 64 , and Commodore VIC-20 ,
The very first IBM-PC (3 OS offered to start, UCSD p-System , CPM-86 , PC-DOS )
Sinclair Micro and QX, etc
TRS-DOS , ROM OS 's (largely Microsoft BASIC implementations with file system extensions)
TI99-4
Flex (by Technical Systems Consultants for Motorola 6800 based microcomputers: SWTPC , Tano , Smoke Signal Broadcasting , Gimix , etc)
FLEX9 (by TSC for Motorola 6809 based micros)
mini-FLEX (by TSC for 5.25" disks on 6800 based machines)
Later acquired by Unisys .
MS-DOS (developed jointly with IBM, versions 1.0-6.22)
Windows CE (OS for handhelds that is similar in appearance to Windows)
Microsoft Windows
OS/2 (developed jointly with IBM)
Windows NT multiple versions of each release
Xenix (licensed version of Unix; sold to SCO in '90s)
Other
Other proprietary Unix-like and POSIX -compliant systems
Research Unix-like and other POSIX -compliant systems
BSD (Berkeley Software Distribution, a variant of Unix for DEC VAX hardware)
FreeBSD (one of the outgrowths of UC Regents' abandonment of CSRG 's 'BSD Unix')
DragonFly BSD forked from FreeBSD
NetBSD (one of the outgrowths of UC Regents' abandonment of CSRG 's 'BSD Unix')
OpenBSD forked from NetBSD
Linux
GNU Hurd
SSS-PC Developed at Tokyo University
QDOS (developed at Seattle Computer Products by Tim Paterson for the new Intel 808x CPUs; also called SCP-DOS; licensed to Microsoft -- became MS-DOS/PC-DOS)
MS-DOS (Microsoft's now abandoned DOS variant)
PC-DOS (IBM's DOS variant)
DR-DOS (Digital Research's [later Novell, Caldera, ..] DOS variant)
FreeDOS (an open source DOS variant)
Research non-UNIX
Generic/commodity, non-UNIX, and other
4DOS (command-line user interface for DOS, Windows and OS/2)
AOS , now called Bluebottle (a concurrent and active object update to the Oberon operating system )
BS1000 by Siemens AG
BS2000 by Siemens AG
BS3000 by Siemens AG (functionally similar to OS-IV and MSP from Fujitsu)
Control Program/Monitor (CP/M)
CP/M-80 (CP/M for intel 8080/8085 and Zilog Z80 from Digital Research)
CP/M-86 (CP/M for Intel 8088/86 from Digital Research)
MP/M-80 (Multi programming version of CP/M-80 from Digital Research)
MP/M-86 (Multi programming version of CP/M-86 from Digital Research)
DESQview (multi-tasking windowing user interface for DOS)
FLEX9 (by TSC for Motorola 6809 based machines; successor to FLEX, which was for Motorola 6800 CPUs)
GEM (windowing GUI for CP/M, DOS, and Atari TOS)
GEOS (popular windowing GUI for PC, Commodore, Apple computers)
JavaOS
KERNAL (default OS on Commodore 64)
MorphOS (by Genesi )
MSP by Fujitsu (successor to OS-IV)
nSystem by Luis Mateu at DCC, Universidad_de_Chile
NetWare (networking OS by Novell )
Oberon operating system /(developed at ETH-Zurich by Niklaus Wirth et al) for the Ceres and Chameleon workstation projects. see also Oberon programming language
OSD/XC by Fujitsu-Siemens (BS2000 ported to a emulation on a Sun SPARC platform)
OS-IV by Fujitsu (based on early versions of IBM's MVS)
Pick (often licensed and renamed)
Primos by Prime Computer (sometimes spelled PR1MOS and PR1ME)
SEAL System is a free 32-bit GUI for DOS.
SkyOS (Commercial desktop OS for PCs)
SSB-DOS (by TSC for Smoke Signal Broadcasting; a variant of FLEX in most respects)
TripOS , 1978
UCSD p-System (portable complete programming environment/operating system/virtual machine developed by a long running student project at the Univ Calif/San Diego; directed by Prof Ken Bowles; written in Pascal)
VME by International Computers Limited (ICL)
VM2000 by Siemens AG
VisiOn (first GUI for early PC machines; not commercially successful)
Interpreted
Fictional operating systems
Operating systems that have only appeared in fiction .
External links
