List of operating systems
Operating systems can be categorised by technology (Unix-like or others such as Windows), ownership and licence (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, Category:Unix-like, Category:Open source
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)
Other Proprietary Unix-like and other 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
- TripOS, 1978
- MorphOS (by Genesi)
- 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)
- GEM (windowing GUI for CP/M and DOS)
- VisiOn (first GUI for early PC machines; not commercially successful)
- 4DOS (command-line user interface for DOS)
- DESQView (multi-tasking windowing user interface for DOS)
- GEOS (popular windowing GUI for PC,Commodore,Apple computers)
- 4NT (command-line user interface for Microsoft Windows)
- SkyOS (Commercial desktop OS for PCs)
- NetWare (networking OS by Novell)
- FLEX9 (by TSC for Motorola 6809 based machines; successor to FLEX, which was for Motorola 6800 CPUs)
- SSB-DOS (by TSC for Smoke Signal Broadcasting; a variant of FLEX in most respects)
- JavaOS
- 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)
- Oberon operating system/(developed at ETH-Zurich by Niklaus Wirth et al) for the Ceres and Chameleon workstation projects. see also Oberon programming language
- AOS, now called Bluebottle (a concurrent and active object update to the Oberon operating system)
- VME by International Computers Limited (ICL)
- Pick (often licensed and renamed)
- Primos by Prime Computer (sometimes spelled PR1MOS and PR1ME)
- BS1000 by Siemens AG
- BS2000 by Siemens AG
- BS3000 by Siemens AG (functionally similar to OS-IV and MSP from Fujitsu)
- VM2000 by Siemens AG
- 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)
- MSP by Fujitsu (successor to OS-IV)
Applications
- IOS by Cisco
- MikroTik RouterOS by MikroTik
Interpreted
Fictional Operating Systems
Operating systems that have only appeared in fiction.
