ⓘ List of operating systems

Inferno (operating system)

Inferno is a distributed operating system started at Bell Labs and now developed and maintained by Vita Nuova Holdings as free software. Inferno was based on the experience gained with Plan 9 from Bell Labs, and the further research of Bell Labs into operating systems, languages, on-the-fly compilers, graphics, security, networking and portability. The name of the operating system and many of its associated programs, as well as that of the current company, were inspired by Dante Alighieris Divine Comedy. Interestingly, in Italian, Inferno means "hell" - of which there are nine circles in D ...

DYNIX

DYNIX was a Unix-like operating system developed by Sequent Computer Systems, based on 4.2BSD and modified to run on Intel-based symmetric multiprocessor hardware. The third major version was released May, 1987; by 1992 DYNIX was succeeded by DYNIX/ptx, which was based on UNIX System V. IBM obtained rights to DYNIX/ptx in 1999, when it acquired Sequent for $810 million. IBMs subsequent Project Monterey was an attempt, circa 1999, "to unify AIX with Sequents Dynix/ptx operating system and UnixWare." By 2001, however, "the explosion in popularity of Linux. prompted IBM to quietly ditch" this ...

Idris (operating system)

Idris is a discontinued multi-tasking, Unix-like, multi-user, real-time operating system released by Whitesmiths, of Westford, Massachusetts. The product was commercially available from 1979 through 1988.

Midori (operating system)

Midori was the code name for a managed code operating system being developed by Microsoft with joint effort of Microsoft Research. It had been reported to be a possible commercial implementation of the Singularity operating system, a research project started in 2003 to build a highly dependable operating system in which the kernel, device drivers, and applications are all written in managed code. It was designed for concurrency, and could run a program spread across multiple nodes at once. It also featured a security model that sandboxes applications for increased security. Microsoft had m ...

Oberon (operating system)

The Oberon System is a modular, single-user, single-process, multitasking operating system written in the programming language of the same name. It was originally developed in the late 1980s at ETH Zurich. The Oberon System has an unconventional visual text user interface instead of a conventional CLI or GUI. This "TUI" was very innovative in its time and influenced the design of the Acme text editor for the Plan 9 from Bell Labs operating system. The latest version of the Oberon System, Project Oberon 2013, is still maintained by Niklaus Wirth and a number of collaborators but older ETH v ...

Amoeba (operating system)

Amoeba is a distributed operating system developed by Andrew S. Tanenbaum and others at the Vrije Universiteit Amsterdam. The aim of the Amoeba project was to build a timesharing system that makes an entire network of computers appear to the user as a single machine. Development at the Vrije Universiteit was stopped: the source code of the latest version was last modified on 30 July 1996. The Python programming language was originally developed for this platform.

                                     

ⓘ List of operating systems

This is a list of operating systems. Computer operating systems can be categorized by technology, ownership, licensing, working state, usage, and by many other characteristics. In practice, many of these groupings may overlap. Criteria for inclusion is notability, as shown either through an existing Wikipedia article or citation to a reliable source.

                                     

1. Proprietary

Amiga Inc.

  • AmigaOS 1.0-3.9 Motorola 68000
  • AmigaOS 4 PowerPC
  • AmigaOS
  • Amiga Unix a.k.a. Amix

Apollo Computer

  • Domain/OS – One of the first network-based systems. Run on Apollo/Domain hardware. Later bought by Hewlett-Packard.

Atari

  • Atari TOS
  • Contiki for 8-bit, ST, Portfolio
  • Atari MultiTOS
  • Atari DOS for 8-bit computers

Be Inc.

  • BeOS
  • BeIA
  • BeOS r5.1d0
  • magnussoft ZETA based on BeOS r5.1d0 source code, developed by yellowTAB

Commodore International

  • Geoworks
  • GEOS
  • AROS Research Operating System
  • AmigaOS

Convergent Technologies

  • Convergent Technologies Operating System – later acquired by Unisys

Cromemco

  • Cromemco CDOS – a Disk Operating system compatible with CP/M
  • Cromix – a multitasking, multi-user, Unix-like OS for Cromemco microcomputers with Z80A and/or 68000 CPU

DDC-I, Inc.

  • Deos – Time & Space Partitioned RTOS, Certified to DO-178B, Level A since 1998
  • HeartOS – POSIX-based Hard Real-Time Operating System

ENEA AB

  • OSE – Flexible, small footprint, high-performance RTOS for control processors

General Electric, Honeywell, Bull

  • Multics
  • Real-Time Multiprogramming Operating System
  • GCOS

Green Hills Software

  • INTEGRITY – Reliable Operating system
  • INTEGRITY-178B – A DO-178B certified version of INTEGRITY.
  • µ-velOSity – A lightweight microkernel.

Heathkit, Zenith Data Systems

  • HDOS – ran on the H8 and Heath/Zenith Z-89 series
  • HT-11 – a modified version of RT-11 that ran on the Heathkit H11

MITS

  • Altair DOS – An early disk operating system for the Altair 8800 machine.

NCR Corporation

  • TMX – Transaction Management eXecutive
  • VRX – Virtual Resource eXecutive
  • IMOS – Interactive Multiprogramming Operating System circa 1978, for the NCR Century 8200 series minicomputers

Nintendo

  • ES is a computer operating system developed originally by Nintendo and since 2008 by Esrille. It is open source and runs natively on x86 platforms.

Quadros Systems

  • RTXC Quadros RTOS – proprietary C-based RTOS used in embedded systems

RCA

  • Time Sharing Operating System TSOS – first OS supporting virtual addressing of the main storage and support for both timeshare and batch interface

RoweBots

  • DSPnano RTOS – 8/16 Bit Ultra Tiny Embedded Linux Compatible RTOS

SYSGO

  • PikeOS – a certified real time operating system for safety and security critical embedded systems

TCSC later NCSC

  • Edos – enhanced version of IBMs DOS/360 and later DOS/VS and DOS/VSE operating system for System/360 and System/370 IBM mainframes

Texas Instruments

  • TI-RTOS Kernel – Real-time operating system for TIs embedded devices.

TRON Project

  • T-Kernel
  • TRON – open real-time operating system kernel

UNIVAC, Unisys

  • EXEC II
  • EXEC I
  • VS/9, successor to RCA TSOS
  • EXEC 8/OS 1100/OS 2200

Wang Laboratories

  • OIS Wang Office Information System. Successor to the WPS. Combined the WPS and VP/MVP systems.
  • WPS Wang Word Processing System. Micro-code based system.

Wind River Systems

  • VxWorks – Small footprint, scalable, high-performance RTOS for embedded microprocessor based systems.

Non-standard language-based

  • Pilot operating system – written in the Mesa and used in Xerox Star workstations
  • PERQ Operating System POS – written in PERQ Pascal
                                     

1.1. Proprietary Apple Inc.

  • ProDOS
  • Apple DOS
  • GNO/ME
  • GS/OS
  • Apple II family
  • Apple Pascal
  • Contiki
  • Apple SOS
  • Apple III
  • Classic Mac OS
  • Pink
  • Rhapsody
  • Copland
  • A/UX UNIX System V with BSD extensions
  • macOS Server formerly Mac OS X Server and OS X Server
  • macOS formerly Mac OS X and OS X
  • MkLinux
  • Apple Lisa
  • Apple Macintosh
  • Apple Network Server
  • IBM AIX Apple-customized
  • Newton OS
  • Apple MessagePad
  • iOS formerly iPhone OS
  • iPhone and iPod Touch
  • iPad
  • iPadOS
  • watchOS
  • Apple Watch
  • Apple TV
  • tvOS
  • A/ROSE
  • Embedded operating systems
  • iPod software unnamed embedded OS for iPod
  • Unnamed NetBSD variant for Airport Extreme and Time Capsule
                                     

1.2. Proprietary Apollo Computer

  • Domain/OS – One of the first network-based systems. Run on Apollo/Domain hardware. Later bought by Hewlett-Packard.
                                     

1.3. Proprietary Atari

  • Atari TOS
  • Contiki for 8-bit, ST, Portfolio
  • Atari MultiTOS
  • Atari DOS for 8-bit computers
                                     

1.4. Proprietary Be Inc.

  • BeOS
  • BeIA
  • BeOS r5.1d0
  • magnussoft ZETA based on BeOS r5.1d0 source code, developed by yellowTAB
                                     

1.5. Proprietary Bell Labs

  • UNIX Time-Sharing System v1
  • PWB/UNIX
  • Unix "Kens new system," for its creator Ken Thompson, officially Unics and then Unix, the prototypic operating system created in Bell Labs in 1969 that formed the basis for the Unix family of operating systems)
  • USG
  • MINI-UNIX
  • UNIX Time-Sharing System v6
  • UNIX Time-Sharing System v3
  • UNIX Time-Sharing System v2
  • UNIX Time-Sharing System v5
  • CB Unix
  • UNIX Time-Sharing System v4
  • UNIX Time-Sharing System v7 that almost all Unix-based and Unix-like operating systems descend)
  • Unix System IV
  • Unix System V
  • Unix System V Releases 2.0, 3.0, 3.2, 4.0, and 4.2
  • Unix System III
  • UNIX Time-Sharing System v10
  • UNIX Time-Sharing System v8
  • UNIX TIme-Sharing System v9

Non-Unix Operating Systems:

  • BESYS
  • Plan 9 from Bell Labs
  • Inferno


                                     

1.6. Proprietary Commodore International

  • Geoworks
  • GEOS
  • AROS Research Operating System
  • AmigaOS
                                     

1.7. Proprietary Control Data Corporation

  • MACE Mansfield and Cahlander Executive
  • Kronos Kronographic OS
  • NOS Network Operating System
  • NOS/BE NOS Batch Environment
  • Chippewa Operating System COS
  • NOS/VE NOS Virtual Environment
  • SIPROS for Simultaneous Processing Operating System
  • SCOPE Supervisory Control Of Program Execution
  • EP/IX Enhanced Performance Unix
                                     

1.8. Proprietary Convergent Technologies

  • Convergent Technologies Operating System – later acquired by Unisys
                                     

1.9. Proprietary Cromemco

  • Cromemco CDOS – a Disk Operating system compatible with CP/M
  • Cromix – a multitasking, multi-user, Unix-like OS for Cromemco microcomputers with Z80A and/or 68000 CPU
                                     

1.10. Proprietary Data General

  • AOS for 16-bit Data General Eclipse computers and AOS/VS for 32-bit MV series Eclipses, MP/AOS for microNOVA-based computers
  • DG/UX
  • RDOS Real-time Disk Operating System, with variants: RTOS and DOS not related to PC DOS, MS-DOS etc.
                                     

1.11. Proprietary DataPoint

  • DOS Intel 808x/80x86-based, Disk Operating Systems for desktop systems. Capable of up to 32 users per node. Supported a sophisticated network of nodes that were often purpose-built. The name DOS was used in these products login screens before it was popularized by IBM, Microsoft and others.
  • CTOS Z-80 based, Cassette Tape Operating System for early desktop systems. Capable of up to 8 simultaneous users. Replaced by DOS.


                                     

1.12. Proprietary DDC-I, Inc.

  • Deos – Time & Space Partitioned RTOS, Certified to DO-178B, Level A since 1998
  • HeartOS – POSIX-based Hard Real-Time Operating System
                                     

1.13. Proprietary Digital Research, Inc.

  • CP/M
  • CP/M CP/M for Intel 8080/8085 and Zilog Z80
  • CP/M Plus with BDOS 3.0
  • Personal CP/M, a refinement of CP/M
  • CP/M-86 Plus
  • CP/M-68K CP/M for Motorola 68000
  • CP/M-8000 CP/M for Zilog Z8000
  • CP/M-86 CP/M for Intel 8088/8086
  • Personal CP/M-86
  • MP/M Multi-user version of CP/M-80
  • MP/M II
  • MP/M-86 Multi-user version of CP/M-86
  • MP/M 8-16, a dual-processor variant of MP/M for 8086 and 8080 CPUs.
  • Concurrent CP/M 8-16, a dual-processor variant of Concurrent CP/M for 8086 and 8080 CPUs.
  • Concurrent CP/M-86, the successor of CP/M-86 and MP/M-86
  • Concurrent CP/M, the successor of CP/M-80 and MP/M-80
  • Concurrent CP/M-68K, a variant for the 68000
  • Concurrent DOS XM, a real-mode variant of Concurrent DOS with EEMS support
  • Concurrent DOS, the successor of Concurrent CP/M-86 with PC-MODE
  • Concurrent DOS 8-16, a dual-processor variant of Concurrent DOS for 8086 and 8080 CPUs
  • Concurrent DOS 386
  • Concurrent DOS 286
  • DOS
  • Concurrent PC DOS, a Concurrent DOS variant for IBM compatible PCs
  • Concurrent DOS 386/MGE, a Concurrent DOS 386 variant with advanced graphics terminal capabilities
  • FlexOS 186, a variant of FlexOS for terminals
  • IBM 4690 OS, a POS operating system based on FlexOS
  • Toshiba 4690 OS, a POS operating system based on IBM 4690 OS and FlexOS
  • Concurrent DOS 68K, a port of Concurrent DOS to Motorola 68000 CPUs with DOS source code portability capabilities
  • Siemens S5-DOS/MT, an industrial control system based on FlexOS
  • FlexOS 1.0 – 2.34, a derivative of Concurrent DOS 286
  • IBM 4680 OS, a POS operating system based on FlexOS
  • FlexOS 286, a variant of FlexOS for hosts
  • IBM 4690 OS, a POS operating system based on FlexOS
  • FlexOS 386, a later variant of FlexOS for hosts
  • Toshiba 4690 OS, a POS operating system based on IBM 4690 OS and FlexOS
  • FlexOS 68K, a derivative of Concurrent DOS 68K
  • Multiuser DOS, the successor of Concurrent DOS 386
  • CCI Multiuser DOS
  • Datapac Multiuser DOS
  • Datapac System Manager, a derivative of Datapac Multiuser DOS
  • IMS Multiuser DOS
  • IMS REAL/NG, the successor of REAL/32
  • IMS REAL/32, a derivative of Multiuser DOS
  • Caldera DR-DOS 7.02 and higher
  • Novell DOS 7, a single-user, multi-tasking system derived from DR DOS
  • Caldera OpenDOS 7.01
  • DR-DOS 3.31 – 6.0, a single-user, single-tasking native DOS derived from Concurrent DOS 6.0
  • Novell "Star Trek"
  • Novell PalmDOS 1.0
  • DOS Plus 1.1 – 2.1, a single-user, multi-tasking system derived from Concurrent DOS 4.1 – 5.0


                                     

1.14. Proprietary Digital Equipment Corporation, Tandem Computers, Compaq, Hewlett-Packard

  • Batch-11/DOS-11
  • TOPS-20 – for the PDP-10
  • OS/8
  • RSTS/E – multi-user time-sharing OS for PDP-11s
  • TOPS-10 – for the PDP-10
  • Domain/OS – originally Aegis, from Apollo Computer who were bought by HP
  • RSX-11 – multiuser, multitasking OS for PDP-11s
  • VMS – originally by DEC and HP now by VMS Software Inc) for the VAX mini-computer range, Alpha and Intel Itanium i2 and i4; later renamed OpenVMS
  • Multi-Programming Executive – from HP
  • WAITS – for the PDP-6 and PDP-10
  • RT-11 – single user OS for PDP-11
  • NonStop
  • Digital UNIX – derived from OSF/1, became HPs Tru64 UNIX
  • Ultrix
  • TENEX – an ancestor of TOPS-20 from BBN, for the PDP-10
  • HP-UX
                                     

1.15. Proprietary ENEA AB

  • OSE – Flexible, small footprint, high-performance RTOS for control processors
                                     

1.16. Proprietary General Electric, Honeywell, Bull

  • Multics
  • Real-Time Multiprogramming Operating System
  • GCOS
                                     

1.17. Proprietary Google

  • Chromium OS is an open source operating system development version of Chrome OS. Both operating systems are based on the Linux kernel.
  • Chrome OS is designed to work exclusively with web applications. Announced on July 7, 2009, Chrome OS is currently publicly available and was released summer 2011. The Chrome OS source code was released on November 19, 2009, under the BSD license as Chromium OS.
  • Container-Optimized COS is an operating system that is optimized for running Docker containers, based on Chromium OS
  • Android is an operating system for mobile devices. It consists of Android Runtime userland with Linux kernel, with its Linux kernel modified to add drivers for mobile device hardware and to remove unused Vanilla Linux drivers.
  • Fuchsia is a capability-based, real-time, operating system RTOS scalable to universal devices, in early development, from the tiniest embedded hardware, wristwatches, tablets to the largest personal computers. Unlike Chrome OS and Android, it is not based on the Linux kernel, but instead began on a new microkernel called "Zircon", derived from "Little Kernel".
  • gLinux, a Linux distribution that Google uses internally


                                     

1.18. Proprietary Green Hills Software

  • INTEGRITY – Reliable Operating system
  • INTEGRITY-178B – A DO-178B certified version of INTEGRITY.
  • µ-velOSity – A lightweight microkernel.
                                     

1.19. Proprietary Heathkit, Zenith Data Systems

  • HDOS – ran on the H8 and Heath/Zenith Z-89 series
  • HT-11 – a modified version of RT-11 that ran on the Heathkit H11
                                     

1.20. Proprietary Hewlett-Packard

  • HP-UX – runs on HP9000 and Itanium servers from small to mainframe-class computers
  • HP Multi-Programming Executive – runs on HP 3000 and HP e3000 mini-computers
  • NonStop OS – runs on HPs NonStop line of Itanium servers
                                     

1.21. Proprietary Intel Corporation

  • iRMX – real-time operating system originally created to support the Intel 8080 and 8086 processor families in embedded applications.
  • ISIS, ISIS-II – "Intel Systems Implementation Supervisor" was an environment for development of software within the Intel microprocessor family in the early 1980s on their Intellec Microcomputer Development System and clones. ISIS-II worked with 8 inch floppy disks and had an editor, cross-assemblers, a linker, an object locator, debugger, compilers for PL/M, a BASIC interpreter, etc. and allowed file management through a console.
                                     

1.22. Proprietary On early mainframes: 1400, 701, 704, 709, 7090, 7094

  • SHARE Operating System SOS – for the IBM 704 and 709
  • Compatible Time-Sharing System CTSS – developed at MITs Computation Center for use on a modified IBM 7094
  • GM OS & GM-NAA I/O – for the IBM 704
  • BESYS – for the IBM 7090
  • IBSYS – tape based operating system for IBM 7090 and IBM 7094
  • IJMON – A bootable serial I/O monitor for loading programs for the IBM 1400 series
  • University of Michigan Executive System UMES – for the IBM 704, 709, and 7090)
                                     

1.23. Proprietary On S/360, S/370, and successor mainframes

  • MFT original Multi-programming with a Fixed number of Tasks, replaced by MFT II
  • MVT
  • PCP Primary Control Program, a kernel and a ground breaking automatic space allocating file system
  • OS/360 first official OS targeted for the System/360 architecture
  • MFT II
  • OS/360 and successors on IBM S/360, S/370, and successor mainframes
  • OS/VS2 R2
  • OS/VS2 Operating System/Virtual Storage 2, Virtual-memory version of OS/MVT but without multiprocessing support
  • OS/VS, Customer installations in the following variations
  • SVS Single Virtual Storage, both VS1 & VS2 began as SVS systems
  • OS/VS1 Operating System/Virtual Storage 1, Virtual-memory version of MFT II
  • MVS/SE MVS System Extensions
  • Phoenix/MVS Developed at Cambridge University
  • z/OS OS/390 supported z/Architecture, 64-bit addressing
  • MVS/ESA MVS supported Enterprise System Architecture, horizontal addressing extensions: data only address spaces called Dataspaces; a Unix environment was available starting with MVS/ESA V4R3
  • OS/390 Upgrade from MVS, with an additional Unix environment
  • MVS/XA MVS/SP V2. MVS supported eXtended Architecture, 31-bit addressing
  • MVS/SP MVS System Product
  • DOS/360 Disk Operating System DOS, multi-programming system with up to 3 partitions, first commonly available OS for System/360)
  • DOS/360 and successors on IBM S/360, S/370, and successor mainframes
  • TOS/360 similar to BOS above and more fleeting, able to boot and run from 2x00 series tape drives
  • BOS/360 early interim version of DOS/360, briefly available at a few Alpha & Beta System/360 sites
  • DOS/360/RJE DOS/360 with a control program extension that provided for the monitoring of remote job entry hardware card reader & printer connected by dedicated phone lines)
  • VSE/ESA DOS/VSE extended virtual memory support to 32-bit addresses Extended System Architecture).
  • z/VSE
  • VSE/SP program product replacing DOS/VSE and VSE/AF
  • DOS/VS First DOS offered on System/370 systems, provided virtual storage
  • DOS/VSE
  • CP-40/CMS for System/360 Model 40
  • VM/ESA Virtual Machine / Extended System Architecture, added 31-bit addressing to VM series
  • z/VM z/Architecture version of the VM OS with 64-bit addressing
  • VM/370 Virtual Machine / Conversational Monitor System, virtual memory operating system for System/370
  • CP/CMS Control Program/Cambridge Monitor System and successors on IBM S/360, S/370, and successor mainframes
  • VM/XA VM/eXtended Architecture for System/370 with extended virtual memory
  • CP-67/CMS for System/360 Model 67
  • z/TPF z/Architecture extension
  • TPF Transaction Processing Facility
  • TPF Line Transaction Processing Facility on IBM S/360, S/370, and successor mainframes largely used by airlines
  • ACP Airline Control Program
  • AIX/ESA IBMs Advanced Interactive eXecutive, a System V Unix version
  • UTS developed by Amdahl
  • OpenSolaris for System z
  • AIX/370 IBMs Advanced Interactive eXecutive, a System V Unix version
  • Unix-like on IBM S/360, S/370, and successor mainframes
  • Linux on IBM Z
  • MTS
  • TOS/360 Tape Operating System
  • TSS/360 IBMs Time Sharing System
  • BOS/360 Basic Operating System
  • Others on IBM S/360, S/370, and successor mainframes
  • ORVYL and WYLBUR developed by Stanford University for IBM System/360
  • MUSIC/SP developed by McGill University for IBM System/370
  • RTOS/360 IBMs Real Time Operating System, ran on 5 NASA custom System/360-75s


                                     

1.24. Proprietary On PC and Intel x86 based architectures

  • PC DOS, IBM DOS
  • PC DOS 1.x, 2.x, 3.x developed jointly with Microsoft
  • IBM DOS 4.x, 5.0 developed jointly with Microsoft
  • PC DOS 6.1, 6.3, 7, 2000, 7.10
  • OS/2 Warp 3 ported to PPC via Workplace OS
  • OS/2 Warp 4
  • OS/2
  • OS/2 1.x developed jointly with Microsoft
  • eComStation Warp 4.5/Workspace on Demand, rebundled by Serenity Systems International
  • OS/2 2.x
  • IBM 4680 OS version 1 to 4, a POS operating system based on Digital Researchs Concurrent DOS 286 and FlexOS 286 1.xx
  • Toshiba 4690 OS version 6.4, a successor to 4690 OS 6.3
  • IBM 4690 OS version 1 to 6.3, a successor to 4680 OS based on Novells FlexOS 286/FlexOS 386 2.3x
  • AIX IBMs Advanced Interactive eXecutive, a System V Unix version
  • Unix-like on PS/2
                                     

1.25. Proprietary On other hardware platforms

  • RPS Realtime Programming System
  • EDX Event Driven Executive
  • SerIX Unix on Series/1
  • CPS Control Programming Support, subset of RPS
  • IBM Series/1
  • DMS Disk Monitor System
  • IBM 1130
  • TSX Time Sharing eXecutive
  • MPX Multi Programming eXecutive
  • IBM 1800
  • DPCX Distributed Processing Control eXecutive
  • DPPX Distributed Processing Programming Executive
  • IBM 8100
  • IBM System/3
  • DMS Disk Management System
  • IBM System/34, IBM System/36
  • SSP System Support Program
  • IBM System/38
  • CPF Control Program Facility
  • Stratus VOS
  • IBM System/88
  • AS/400, iSeries, System i, Power Systems i Edition
  • i5/OS extends OS/400 with significant interoperability features
  • OS/400 descendant of System/38 CPF, include System/36 SSP environment
  • IBM i extends i5/OS
  • AIX Advanced Interactive eXecutive, a System V Unix version
  • UNIX on IBM RT PC
  • AOS a BSD Unix version, not related to Data General AOS
  • UNIX on POWER ISA, PowerPC, and Power ISA
  • AIX Advanced Interactive eXecutive, a System V Unix version
  • Dynix developed by Sequent, and used for IBM NUMA-Q too
  • Others
  • Workplace OS a Microkernel based operating system including OS/2, developed and canceled in the 1990s
  • K42 open-source research operating system on PowerPC or x86 based cache-coherent multiprocessor systems


                                     

1.26. Proprietary International Computers Limited

  • J and MultiJob – for the System 4 series mainframes
  • ICL VME – including early variants VME/B and VME/2900, appearing on the ICL 2900 Series and Series 39 mainframes, implemented in S3
  • GEORGE 2/3/4 GEneral ORGanisational Environment – used by ICL 1900 series mainframes
  • Executive – used on the 1900 and 290x range of minicomputers. A modified version of Executive was also used as part of GEORGE 3 and 4.
  • TME – used on the ME29 minicomputer
  • VME/K – on early smaller 2900s
                                     

1.27. Proprietary Micrium Inc.

  • MicroC/OS-III – small pre-emptive priority based multi-tasking kernel, with unlimited number of tasks and priorities, and round robin scheduling
  • MicroC/OS-II – small pre-emptive priority based multi-tasking kernel
                                     

1.28. Proprietary Microsoft Corporation

  • Windows 95 codename Chicago – Windows 4.0
  • Windows 2.0 Windows 2 – separate version for i386 processor
  • Windows for Workgroups 3.11
  • Windows 1.0 Windows 1
  • Windows 98 codename Memphis – Windows 4.1
  • Windows for Workgroups 3.1 Codename Snowball
  • Windows Millennium Edition Windows ME – Windows 4.9
  • MS-DOS developed jointly with IBM, versions 1.0–6.22
  • Windows 16-bit and 32-bit preemptive and cooperative multitasking, running atop MS-DOS
  • DOS/V
  • Windows 3.0 Windows 3
  • Windows 3.1x Windows 3.1
  • MSX-DOS developed by MS Japan for the MSX 8-bit computer
  • Windows 3.2 Chinese-only release
  • Xenix licensed version of Unix; licensed to SCO in 1987
  • Windows Server 2008 based on Windows Vista
  • Windows Home Server 2011 based on Windows Server 2008 R2
  • Windows Server 2012 R2 based on Windows 8.1
  • Windows 8.1 Windows NT 6.3
  • Windows 8 Windows NT 6.2
  • Windows NT Full 32-bit or 64-bit kernel, not dependent on MS-DOS
  • Windows 10 Windows NT 10
  • Windows NT 3.5
  • Windows 2000 Windows NT 5.0
  • Xbox One system software
  • Windows XP Windows NT 5.1
  • Windows NT 4.0
  • Windows Server 2016
  • Windows Server 2012 based on Windows 8
  • Windows Azure Cloud OS Platform 2009
  • Windows Phone 8.1
  • Windows Server 2008 R2 based on Windows 7
  • Windows 10 Mobile
  • Windows 7 Windows NT 6.1
  • Windows Server 2003 Windows NT 5.2
  • Windows Fundamentals for Legacy PCs based on Windows XP
  • Windows Vista Windows NT 6.0
  • Windows Phone 8
  • Windows Home Server based on Windows Server 2003
  • Windows NT 3.51
  • Windows Server 2019
  • Windows NT 3.1
  • Windows CE 3.0
  • Windows CE 5.0
  • Windows CE
  • Windows CE 6.0
  • Windows Mobile based on Windows CE, but for a smaller form factor
  • Windows Phone 7
  • Singularity – A research operating system written mostly in managed code C#
  • Midori – A managed code operating system
  • Xbox One system software
  • Azure Sphere
  • ThreadX
  • Xbox 360 system software
                                     

1.29. Proprietary MITS

  • Altair DOS – An early disk operating system for the Altair 8800 machine.
                                     

1.30. Proprietary NCR Corporation

  • TMX – Transaction Management eXecutive
  • VRX – Virtual Resource eXecutive
  • IMOS – Interactive Multiprogramming Operating System circa 1978, for the NCR Century 8200 series minicomputers
                                     

1.31. Proprietary Nintendo

  • ES is a computer operating system developed originally by Nintendo and since 2008 by Esrille. It is open source and runs natively on x86 platforms.
                                     

1.32. Proprietary Novell

  • NetWare – network operating system providing high-performance network services. Has been superseded by Open Enterprise Server line, which can be based on NetWare or Linux to provide the same set of services.
  • Novell "SuperNOS" – a never released merge of NetWare and UnixWare
  • UnixWare
  • Novell "Corsair"
  • Novell "Expose"
  • Open Enterprise Server – the successor to NetWare
                                     

1.33. Proprietary Quadros Systems

  • RTXC Quadros RTOS – proprietary C-based RTOS used in embedded systems
                                     

1.34. Proprietary RCA

  • Time Sharing Operating System TSOS – first OS supporting virtual addressing of the main storage and support for both timeshare and batch interface
                                     

1.35. Proprietary RoweBots

  • DSPnano RTOS – 8/16 Bit Ultra Tiny Embedded Linux Compatible RTOS
                                     

1.36. Proprietary Samsung Electronics

  • Tizen is an operating system based on the Linux kernel, a project within the Linux Foundation and is governed by a Technical Steering Group TSG while controlled by Samsung and backed by Intel. Tizen works on a wide range of Samsung devices including smartphones, tablets, smart TVs, PCs and wearable.
  • Bada
                                     

1.37. Proprietary SCO, SCO Group

  • Xenix, Unix System III based distribution for the Intel 8086/8088 architecture
  • Xenix 386, Unix System V Release 2 based distribution for the Intel 80386 architecture
  • Xenix 286, Unix System V Release 2 based distribution for the Intel 80286 architecture
  • SCO Open Desktop, the first 32-bit graphical user interface for UNIX Systems running on Intel processor-based computers. Based on SCO Unix
  • SCO Unix, SCO UNIX System V/386 was the first volume commercial product licensed by AT&T to use the UNIX System trademark 1989. Derived from AT&T System V Release 3.2 with an infusion of Xenix device drivers and utilities plus most of the SVR4 features
  • SCO OpenServer 6, SVR5 UnixWare 7 based kernel with SCO OpenServer 5 application and binary compatibility, system administration, and user environments
  • UnixWare 2.x, based on AT&T System V Release 4.2MP
  • SCO OpenServer 5, AT&T UNIX System V Release 3 based
  • UnixWare 7, UnixWare 2 kernel plus parts of 3.2v5 UnixWare 2 + OpenServer 5 = UnixWare 7. Referred to by SCO as SVR5
  • UnixWare
                                     

1.38. Proprietary SYSGO

  • PikeOS – a certified real time operating system for safety and security critical embedded systems
                                     

1.39. Proprietary Tandy Corporation

  • DeskMate – Operating system created by Tandy Corporation and introduced with the Tandy 1000 computer.
  • NewDos/80 – A third-party OS for Tandys TRS-80 personal computers.
  • TRSDOS – A floppy-disk-oriented OS supplied by Tandy/Radio Shack for their TRS-80 Z80-based line of personal computers. Eventually renamed as LS-DOS or LDOS.
  • Color BASIC – A ROM-based OS created by Microsoft for the TRS-80 Color Computer.
                                     

1.40. Proprietary TCSC later NCSC

  • Edos – enhanced version of IBMs DOS/360 and later DOS/VS and DOS/VSE operating system for System/360 and System/370 IBM mainframes
                                     

1.41. Proprietary Texas Instruments

  • TI-RTOS Kernel – Real-time operating system for TIs embedded devices.
                                     

1.42. Proprietary TRON Project

  • T-Kernel
  • TRON – open real-time operating system kernel
                                     

1.43. Proprietary UNIVAC, Unisys

  • EXEC II
  • EXEC I
  • VS/9, successor to RCA TSOS
  • EXEC 8/OS 1100/OS 2200
                                     

1.44. Proprietary Wang Laboratories

  • OIS Wang Office Information System. Successor to the WPS. Combined the WPS and VP/MVP systems.
  • WPS Wang Word Processing System. Micro-code based system.
                                     

1.45. Proprietary Wind River Systems

  • VxWorks – Small footprint, scalable, high-performance RTOS for embedded microprocessor based systems.
                                     

1.46. Proprietary Lisp-based

  • Xerox 1100 series of Lisp machines used an operating system also written in Interlisp, and was also ported to a virtual machine called "Medley."
  • Symbolics Genera written in a systems dialect of the Lisp programming language called ZetaLisp and Symbolics Common Lisp. Genera was ported to a virtual machine for the DEC Alpha line of computers.
  • Lisp Machines, Inc. also known as LMI used an operating system written in MITs Lisp Machine Lisp.
  • Texas Instruments Explorer Lisp machine workstations also had systems code written in Lisp Machine Lisp.
                                     

1.47. Proprietary Non-standard language-based

  • Pilot operating system – written in the Mesa and used in Xerox Star workstations
  • PERQ Operating System POS – written in PERQ Pascal
                                     

1.48. Proprietary Other proprietary non-Unix-like

  • MUSIC/SP – an operating system developed for the S/370, running normally under VM
  • THEOS
  • TX990/TXDS, DX10 and DNOS – proprietary operating systems for TI-990 minicomputers
  • EOS – developed by ETA Systems for use in their ETA-10 line of supercomputers
  • SINTRAN III – an operating system used with Norsk Data computers.
  • GCOS – a proprietary Operating System originally developed by General Electric
  • Michigan Terminal System – Developed by a group of universities in the US, Canada, and the UK for use on the IBM System/360 Model 67, the System/370 series, and compatible mainframes
  • EMBOS – developed by Elxsi for use on their mini-supercomputers
  • MAI Basic Four – An OS implementing Business Basic from MAI Systems.
  • PC-MOS/386 – DOS-like, but multiuser/multitasking
  • Prolog-Dispatcher – used to control Soviet Buran space ship.
  • SkyOS – commercial desktop OS for PCs
  • OS ES – an operating system for ES EVM
  • TSX-32 – a 32-bit operating system for x86 platform.
  • SODA – used by the Odra 1204 computers.
  • Эльбрус-1 Elbrus-1 and Эльбрус-2 – used for application, job control, system programming, implemented in uЭль-76 AL-76.
                                     

1.49. Proprietary Other proprietary Unix-like and POSIX-compliant

  • DC/OSx DataCenter/OSx - an operating system developed by Pyramid Technology for its MIPS-based systems
  • Amiga Unix Amiga ports of Unix System V release 3.2 with Amiga A2500UX and SVR4 with Amiga A3000UX. Started in 1990, last version was in 1992
  • Rhapsody an early form of Mac OS X
  • OSF/1 developed into a commercial offering by Digital Equipment Corporation
  • IRIX from SGI
  • SINIX a port by SNI of Unix to the MIPS architecture
  • HeliOS developed and sold by Perihelion Software mainly for transputer-based systems
  • SUPER-UX a port of System V Release 4.2MP with features adopted from BSD and Linux for NEC SX architecture supercomputers
  • Aegis Apollo Computer
  • Coherent Unix-like OS from Mark Williams Co. for PC class computers
  • SCO UNIX from SCO, bought by Caldera who renamed themselves SCO Group
  • DSPnano RTOS
  • OS9/68K Unix-like RTOS. OS from Microware for Motorola 680x0 based microcomputers; based on OS-9
  • OpenStep
  • Unicos the version of Unix designed for Cray Supercomputers, mainly geared to vector calculations
  • System V a release of AT&T Unix, SVR4 was the 4th minor release
  • OS-9 Unix-like RTOS. OS from Microware for Motorola 6809 based microcomputers
  • Trusted Solaris with kernel and other enhancements to support multilevel security
  • OS-9000 Unix-like RTOS. OS from Microware for Intel x86 based microcomputers; based on OS-9, written in C
  • RMX
  • System V/AT, 386 The first version of AT&T System V UNIX on the IBM 286 and 386 PCs, ported and sold by Microport
  • UTX-32 Developed by Gould CSD Computer System Division, a Unix-based OS that included both BSD and System V characteristics. It was one of the first Unix based systems to receive NSAs C2 security level certification)
  • RISC iX – derived from BSD 4.3, by Acorn computers, for their ARM family of machines
  • Zenix, Zenith corporations Unix a popular USA electronics maker at the time
  • SunOS BSD-based Unix system used on early Sun hardware
  • QNX POSIX, microkernel OS; usually a real time embedded OS
  • Interactive Unix a port of the UNIX System V operating system for Intel x86 by Interactive Systems Corporation
  • UniFLEX
  • DNIX from DIAB
  • MeikOS
  • DG/UX Data General Corp
  • NeXTSTEP developed by NeXT; a Unix-based OS based on the Mach microkernel
  • RISC/os a port by MIPS Technologies of 4.3BSD for its MIPS-based computers
  • Solaris from Sun, bought by Oracle; a System V-based replacement for SunOS
                                     

2.1. Non-proprietary Unix or Unix-like

  • TrueOS previously known as PC-BSD
  • GhostBSD
  • MidnightBSD, forked from FreeBSD 6.1
  • FreeBSD one of the outgrowths of UC Regents abandonment of CSRGs BSD Unix
  • DragonFlyBSD, forked from FreeBSD 4.8
  • BSD Berkeley Software Distribution, a variant of Unix for DEC VAX hardware
  • MINIX study OS developed by Andrew S. Tanenbaum in the Netherlands
  • Bitrig forked from OpenBSD
  • NetBSD an embedded device BSD variant
  • OpenBSD forked from NetBSD
  • Darwin, created by Apple using code from NeXTSTEP, FreeBSD, and NetBSD
  • Redox written in Rust
  • GNU also known as GNU/Hurd
  • Linux see also List of Linux distributions alleged to be GNU/Linux see GNU/Linux naming controversy
  • Android-x86
  • Android
  • Remix OS
  • OpenSolaris
  • illumos, contains original Unix SVR4 code derived from the OpenSolaris discontinued by Oracle in favor of Solaris 11 Express
  • Cray Linux Environment
  • OpenIndiana, operates under the illumos Foundation. Uses the illumos kernel, which is a derivative of OS/Net, which is basically an OpenSolaris/Solaris kernel with the bulk of the drivers, core libraries, and basic utilities.
  • Nexenta OS, based on the illumos kernel with Ubuntu packages
  • SmartOS, an illumos distribution for cloud computing with Kernel-based Virtual Machine integration.
  • TUNIS University of Toronto
  • RTEMS Real-Time Executive for Multiprocessor Systems
  • Plurix or Tropix By Federal University of Rio de Janeiro - UFRJ
  • VSTa
  • Haiku open source inspired by BeOS, under development
  • Syllable Desktop
  • Univention Corporate Server
                                     

2.2. Non-proprietary Non-Unix

  • TempleOS – written in HolyC
  • OSv – written in C++
  • Ghost OS – written in Assembly, C/C++
  • Visopsys – written by Andy McLaughlin written in C and Assembly
  • FreeDOS – open source DOS variant
  • SharpOS – written in.NET C#
  • osFree – OS/2 Warp open source clone.
  • Phantom OS – persistent object oriented
  • ReactOS – open source OS designed to be binary compatible with Windows NT and its variants ; currently in development phase
  • Cosmos – written in C#
  • ITS – written by MIT students for the PDP-6 and PDP-10 written in MIDAS
  • Genode – operating system framework for microkernels written in C++
                                     

3.1. Research Unix or Unix-like

  • Inferno – distributed OS derived from Plan 9, originally from Bell Labs
  • Plan 9 from Bell Labs – distributed OS developed at Bell Labs, based on original Unix design principles yet functionally different and going much further
  • Research Unix
                                     

3.2. Research Non-Unix

  • CapROS – microkernel EROS successor
  • EROS – microkernel, capability-based
  • Croquet
  • Amoeba – research OS by Andrew S. Tanenbaum
  • Singularity - experimental OS from Microsoft Research written in managed code to be highly dependable
  • THE multiprogramming system – by Dijkstra in 1968, at the Eindhoven University of Technology in the Netherlands, introduced the first form of software-based memory segmentation, freeing programmers from being forced to use actual physical locations
  • V – from Stanford, early 1980s
  • Xinu – Study OS developed by Douglas E. Comer in the United States
  • HelenOS – research and experimental operating system
  • L4 – second generation microkernel
  • Verve - OS designed by Microsoft Research to be verified end-to-end for type safety and memory safety
  • ILIOS – Research OS designed for routing
  • Nemesis – Cambridge University research OS – detailed quality of service abilities
  • House – Haskell Users Operating System and Environment, research OS written in Haskell and C
  • Mach – from OS kernel research at Carnegie Mellon University; see NeXTSTEP
  • Spring – research OS from Sun Microsystems
                                     

4. Disk operating systems DOS

  • 86-DOS developed at Seattle Computer Products by Tim Paterson for the new Intel 808x CPUs; licensed to Microsoft, became PC DOS/MS-DOS. Also known by its working title QDOS.
  • PC DOS
  • MS-DOS
  • Concurrent DOS 3.1-4.1 BDOS 3.1-4.1
  • Concurrent CP/M-86 3.1 BDOS 3.1 with PC-MODE Digital Researchs successor of CP/M-86 and MP/M-86
  • DOS Plus 1.1, 1.2 BDOS 4.1, 2.1 BDOS 5.0 single-user, multi-tasking system derived from Concurrent DOS 4.1-5.0
  • Concurrent PC DOS 3.2 BDOS 3.2 Concurrent DOS variant for IBM compatible PCs
  • FlexOS 186 variant of FlexOS for terminals
  • Siemens S5-DOS/MT industrial control system based on FlexOS
  • FlexOS 1.00-2.34 derivative of Concurrent DOS 286
  • Concurrent DOS 8-16 dual-processor variant of Concurrent DOS for 8086 and 8080 CPUs
  • FlexOS 286 variant of FlexOS for hosts
  • Toshiba 4690 POS operating system based on IBM 4690 OS and FlexOS
  • IBM 4680 POS operating system based on FlexOS
  • Concurrent DOS 286 1.x
  • IBM 4690 POS operating system based on FlexOS
  • Toshiba 4690 POS operating system based on IBM 4690 OS and FlexOS
  • IBM 4690 POS operating system based on FlexOS
  • FlexOS 386 later variant of FlexOS for hosts
  • Concurrent DOS 386/MGE Concurrent DOS 386 variant with advanced graphics terminal capabilities
  • Multiuser DOS 5.0, 5.01, 5.1 BDOS 6.3-6.6 successor of Concurrent DOS 386
  • CCI Multiuser DOS 5.0-7.22 up to BDOS 6.6
  • Datapac Multiuser DOS
  • Concurrent DOS 386 1.0, 1.1, 2.0, 3.0 BDOS 5.0-6.2
  • Datapac System Manager 7 derivative of Datapac Multiuser DOS
  • IMS REAL/NG successor of REAL/32
  • IMS REAL/32 7.50, 7.51, 7.52, 7.53, 7.54, 7.60, 7.61, 7.62, 7.63, 7.70, 7.71, 7.72, 7.73, 7.74, 7.80, 7.81, 7.82, 7.83, 7.90, 7.91, 7.92, 7.93, 7.94, 7.95 BDOS 6.8 and higher derivative of Multiuser DOS
  • IMS Multiuser DOS 5.1, 7.0, 7.1 BDOS 6.6-6.7
  • Caldera OpenDOS 7.01 BDOS 7.2
  • Novell DR DOS "StarTrek"
  • Enhanced DR-DOS 7.01.0x BDOS 7.2
  • Novell PalmDOS 1 BDOS 7.0
  • Concurrent DOS XM 5.0, 5.2, 6.0, 6.2 BDOS 5.0-6.2 real-mode variant of Concurrent DOS with EEMS support
  • Novell DOS 7
  • DR DOS 3.31, 3.32, 3.33, 3.34, 3.35, 5.0, 6.0 BDOS 6.0-7.1 single-user, single-tasking native DOS derived from Concurrent DOS 6.0)
  • Dell Real Mode Kernel DRMK
  • Novell DOS 7 updates 1-10 BDOS 7.2
  • Novell DOS 7 updates 11-15.2 BDOS 7.2
  • DR-DOS "WinBolt"
  • OEM DR-DOS 7.07 BDOS 7.4/7.7
  • Caldera DR-DOS 7.02-7.03 BDOS 7.3
  • OEM DR-DOS 7.04-7.05 BDOS 7.3
  • OEM DR-DOS 7.06 PQDOS
  • DESQview + QEMM 386 multi-tasking user interface for DOS
  • PTS-DOS variant by Russian company Phystechsoft
  • FreeDOS open source DOS variant
  • ProDOS operating system for the Apple II series computers
  • TurboDOS Software 2000, Inc. for Z80 and Intel 8086 processor-based systems
  • DESQView/X X-windowing GUI for DOS
  • Multi-tasking user interfaces and environments for DOS
                                     

5. Network operating systems

  • Fabric OS – by Brocade
  • Cambridge Ring
  • ExtremeXOS – by Extreme Networks
  • Cisco NX-OS – previously SAN-OS
  • Banyan VINES – by Banyan Systems
  • JunOS – by Juniper
  • Data ONTAP – by NetApp
  • CTOS – by Convergent Technologies, later acquired by Unisys
  • Novell Open Enterprise Server – Open Source networking OS by Novell. Can incorporate either SUSE Linux or Novell NetWare as its kernel
  • Network operating system NOS – developed by CDC for use in their Cyber line of supercomputers
  • Inferno – distributed OS derived from Plan 9, originally from Bell Labs
  • Plan 9 – distributed OS developed at Bell Labs, based on Unix design principles but not functionally identical
  • Cisco IOS – by Cisco Systems
  • NetWare – networking OS by Novell
  • ExtremeWare – by Extreme Networks
  • TurboDOS – by Software 2000, Inc.
                                     

6. Generic, commodity, and other

  • SymbOS GUI based multitasking operating system for Z80 computers
  • JavaOS
  • KERNAL default OS on Commodore 64
  • VM2000 by Siemens AG
  • MSP by Fujitsu successor to OS-IV, now MSP/EX, also known as Extended System Architecture EXA, for 31-bit mode
  • TripOS, 1978
  • Bluebottle also known as AOS a concurrent and active object update to the Oberon operating system
  • MERLIN for the Corvus Concept
  • OSD/XC by Fujitsu-Siemens BS2000 ported to an emulation on a Sun SPARC platform
  • BS2000 by Siemens AG, now BS2000/OSD from Fujitsu-Siemens Computers formerly Siemens Nixdorf Informationssysteme
  • JX Java operating system that focuses on a flexible and robust operating system architecture developed as an open source system by the University of Erlangen.
  • Oberon operating system developed at ETH-Zurich by Niklaus Wirth et al. for the Ceres and Chameleon workstation projects
  • Sinclair QDOS multitasking for the Sinclair QL computer
  • Contiki for various, mostly 8-bit systems, including the Apple II series, the Atari 8-bit family, and some Commodore machines.
  • GEM
  • Symobi
  • PRIMOS by Prime Computer sometimes spelled PR1MOS and PR1ME
  • TurboDOS Software 2000, Inc.
  • VOS by Stratus Technologies with strong influence from Multics
  • NetWare networking OS by Novell
  • SSB-DOS by TSC for Smoke Signal Broadcasting; a variant of FLEX in most respects
  • BLIS/COBOL
  • OS-IV by Fujitsu based on early versions of IBMs MVS
  • GEOS
  • BS3000 by Siemens AG functionally similar to OS-IV and MSP from Fujitsu
  • Visi On first GUI for early PC machines; not commercially successful
  • BS1000 by Siemens AG
  • UCSD p-System portable complete programming environment/operating system/virtual machine developed by a long running student project at UCSD; directed by Prof Kenneth Bowles; written in Pascal
  • MorphOS Amiga compatible
  • VPS/VM IBM based, main operating system at Boston University for over 10 years.
  • VOS3 by Hitachi for its IBM-compatible mainframes, based on IBMs MVS
  • FLEX9 by TSC for Motorola 6809 based machines; successor to FLEX, which was for Motorola 6800 CPUs
  • JNode Java New Operating System Design Effort, written 99% in Java native compiled, provides own JVM and JIT compiler. Based on GNU Classpath.
  • Pick often licensed and renamed
                                     

7. Hobby

  • AtheOS – branched to become Syllable Desktop
  • AROS – AROS Research Operating System formerly known as Amiga Research Operating System
  • Syllable Desktop – a modern, independently originated OS; see AtheOS
  • HelenOS – based on a preemptible microkernel design
  • EmuTOS
  • KolibriOS – a fork of MenuetOS
  • DSPnano RTOS
  • DexOS – 32-bit operating system written in x86 assembly
  • LSE/OS
  • MenuetOS – extremely compact OS with GUI, written entirely in FASM assembly language
  • EROS – Extremely Reliable Operating System
  • BareMetal
  • ToaruOS
  • PonyOS
                                     

8.1. Embedded Mobile operating systems

See also Mobile Operating systems

  • Android
  • DIP DOS on Atari Portfolio
  • LineageOS
  • Embedded Linux see also Linux for mobile devices
  • See also List of custom Android distributions
  • Replicant
  • webOS from Palm, Inc., later Hewlett-Packard via acquisition, and most recently at LG Electronics through acquisition from Hewlett-Packard
  • PostmarketOS
  • Ubuntu Touch
  • Mobilinux
  • OpenZaurus
  • Qt Extended
  • Sailfish OS
  • MotoMagx
  • Firefox OS
  • Access Linux Platform
  • MeeGo from merger of Maemo & Moblin
  • Openmoko Linux
  • bada
  • Tizen earlier called LiMo Platform
  • Mæmo based on Debian deployed on Nokias Nokia 770, N800 and N810 Internet Tablets.
  • Familiar Linux
  • OPhone
  • Ångstrom distribution
  • MS-DOS on Poqet PC, HP 95LX, HP 100LX, HP 200LX, HP 1000CX, HP OmniGo 700LX
  • Inferno distributed OS originally from Bell Labs
  • Plan 9 from Bell Labs
  • PEN/GEOS on HP OmniGo 100 and 120
  • PVOS
  • Palm OS from Palm, Inc; now spun off as PalmSource
  • PenPoint OS
  • NetBSD
  • EPOC
  • Magic Cap
  • Newton OS on Apple MessagePad
  • Symbian OS
  • Windows CE, from Microsoft
  • Windows Mobile from Microsoft, a variant of Windows CE
  • Pocket PC from Microsoft, a variant of Windows CE
  • Windows Phone from Microsoft
  • tvOS
  • watchOS
  • DSPnano RTOS
  • iOS
  • PEN/GEOS, GEOS-SC, GEOS-SE
  • BlackBerry OS
  • RockBox
  • iPod software
  • BlackBerry 10
  • Symbian platform successor to Symbian OS
  • Palm OS
  • iriver clix OS
  • iPodLinux
                                     

8.2. Embedded Routers

  • Inferno – distributed OS originally from Bell Labs
  • LibreCMC
  • DD-WRT
  • IOS-XR – by Cisco Systems
  • Linux
  • LEDE
  • Cisco IOS – originally Internetwork Operating System by Cisco Systems
  • JunOS – by Juniper Networks
  • OpenWrt
  • Gargoyle
  • CatOS – by Cisco Systems
  • Zeroshell
  • pfsense
  • OPNsense
  • FreeBSD
  • m0n0wall
  • RTOS – by Force10 Networks
  • List of wireless router firmware projects
                                     

8.3. Embedded Other embedded

  • ThreadX
  • REX OS – microkernel OS; usually an embedded cell phone OS
  • MINIX
  • ChibiOS/RT
  • pSOS Portable Software On Silicon
  • NuttX
  • Windows IoT Enterprise
  • ERIKA Enterprise
  • Nucleus RTOS
  • QNX – Unix-like real-time operating system, aimed primarily at the embedded systems market.
  • ROM-DOS
  • Windows IoT Core
  • NetBSD
  • eCos
  • OpenEmbedded or Yocto Project
  • RIOT
  • freeRTOS, openRTOS and safeRTOS
  • DSPnano RTOS
  • Windows CE
  • Apache Mynewt
  • NCOS
  • Windows IoT – formerly Windows Embedded
  • Contiki
  • TinyOS
  • Wombat OS – microkernel OS; usually a real time embedded OS
  • Wind River VxWorks – Small footprint, scalable, high-performance RTOS for embedded microprocessor based systems.
  • Zephyr
                                     

9. Capability-based

  • HYDRA – Running on the C.mmp computer at Carnegie Mellon University, implemented in the programming language BLISS
  • EROS microkernel
  • CapROS EROS successor
  • Flex machine – Custom microprogrammable hardware, with an operating system, modular compiler, editor, * garbage collector and filing system all written in ALGOL 68.
  • Cambridge CAP computer – operating system demonstrated the use of security capabilities, both in hardware and software, also a useful fileserver, implemented in ALGOL 68C
  • KeyKOS nanokernel
  • V – from Stanford, early 1980s
                                     
  • The following is a list of operating systems released by Apple Inc. Apple DOS is the first operating system for Apple computers Apple ProDOS Apple GS OS
  • following is a list of Microsoft written and published operating systems For the codenames that Microsoft gave their operating systems see Microsoft
  • This is a list of disk operating systems in which the acronym DOS is used to form their names. Many of these are simply referred to as DOS within their
  • tables provide a comparison of operating systems of computer devices, as listing general and technical information for a number of widely used and currently
  • This is a list of operating systems specifically focused on security. General - purpose operating systems may be secure in practice, without being specifically
  • of work it can perform in a given period of time. See the comparison of real - time operating systems for a comprehensive list Also, see the list of operating
  • Time - sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time
  • Computer operating systems OSes provide a set of functions needed and used by most application programs on a computer, and the links needed to control
  • software open - source operating systems Where not all of the versions support a feature, the first version which supports it is listed No for single line
  • This is a list of real - time operating systems An RTOS is an operating system in which the time taken to process an input stimulus is less than the time
  • are a number of Unix - like operating systems under active development, descended from the Berkeley Software Distribution BSD series of UNIX variants