Luettelo käyttöjärjestelmistä

Tämä on luettelo käyttöjärjestelmistä.

Kaupalliset/suljetut

Acorn Computers

• Arthur
• ARX
• MOS
• RISC iX
• RISC OS

Amiga Inc.

• AmigaOS
  • AmigaOS 1.0-3.9 (Motorola 68000)
  • AmigaOS 4 (PowerPC)
• Amiga UNIX (eli Amix)

Apple Inc.

• Apple II -perhe
  • Apple DOS
  • Apple Pascal
  • ProDOS
  • GS/OS
• Apple III
  • Apple SOS
• Apple Lisa
  • Lisa Workshop
  • Lisa Operating System
• Apple Macintosh
  • Mac OS
  • A/UX (UNIX System V BSD-lisäyksillä)
  • Rhapsody
  • NeXTSTEP
  • macOS (ennen Mac OS X ja OS X)
  • macOS Server (ennen Mac OS X Server ja OS X Server)
• Apple Network Server
  • IBM AIX (Applen mukauttamana)
• Apple MessagePad
  • Newton OS
• iPhone, iPod Touch, iPad
  • iOS
• Apple Watch
  • watchOS
• Apple TV
  • tvOS
• Sulautetut käyttöjärjestelmät
  • A/ROSE
  • iPod software (nimetön sulautettu käyttöjärjestelmä iPodille)
  • Nimetön NetBSD-variantti Airport Extremeä ja Time Capsulea varten

Apollo Computer

• Domain/OS : Yksi ensimmäisistä verkkopohjaisista järjestelmistä. Apollo/Domain-laitteistolla. Myöhemmin Hewlett-Packardin ostama.

Atari

• Atari DOS (8-bittisille tietokoneille)
• Atari TOS
• Atari MultiTOS

BAE Systems

• XTS-400

Be Inc.

• BeOS
  • BeIA
  • BeOS r5.1d0
    • magnussoft ZETA (perustuu BeOS r5.1d0:n lähdekoodiin, kehittänyt yellowTAB)

Bell Labs

• Unix ("Kenin uusi järjestelmä" tekijänsä Ken Thompsonin mukaan, virallisesti Unics sitten Unix, Bell Labsissa 1969 käyttöjärjestelmä joka toimi prototyyppinä Unix-pohjaisille käyttöjärjestelmille)
  • UNIX Time-Sharing System v1
  • UNIX Time-Sharing System v2
  • UNIX Time-Sharing System v3
  • UNIX Time-Sharing System v4
  • UNIX Time-Sharing System v5
  • UNIX Time-Sharing System v6
    • MINI-UNIX
    • PWB/UNIX
      • USG
        • CB Unix
  • UNIX Time-Sharing System v7 (Juuri Version 7 Unixiin (ja osin myös sen alaversioista) pohjautuvat kaikki nykyiset Unixiin pohjautuvat sekä Unixin kaltaiset käyttöjärjestelmät.)
    • Unix System III
    • Unix System IV
    • Unix System V
      • Unix System V -versiot 2.0, 3.0, 3.2, 4.0 ja 4.2
  • UNIX Time-Sharing System v8
  • UNIX TIme-Sharing System v9
  • UNIX Time-Sharing System v10

Unixiin liittymättömät:

• BESYS
• Plan 9 from Bell Labs

Bull SAS

• General Comprehensive Operating System (GCOS)

Burroughs Corporation, Unisys

• Burroughs MCP

Control Data Corporation

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

Convergent Technologies

• Convergent Technologies Operating System (Unisys osti myöhemmin)

Data General

• AOS 16-bittisille Data General Eclipse -tietokoneille ja AOS/VS 32-bittisille (MV-sarjan) Eclipseille, MP/AOS microNOVA-pohjaisille tietokoneille
• DG/UX
• RDOS Real-time Disk Operating System, muunnoksia: RTOS ja DOS (ei sukua PC DOS:lle, MS-DOS:lle jne.)

DataPoint

• CTOS Z80-pohjaisille, Cassette Tape Operating System aikaisille työpöytäjärjestelmille. Pystyy peräti 8 samanaikaiseen käyttäjään. DataPoint DOS:n korvaama.
• DOS Intel 808x/80x86-pohjainen, Disk Operating System työpöytäjärjestelmille. Pystyy peräti 32 käyttäjään solmua kohden. Tuki usein tarkoitusta varten rakennettua hienostunutta solmuverkostoa. DOS-nimeä käytettiin näiden järjestelmien kirjautumisruuduissa ennen kuin IBM, Microsoft ja muut tekivät nimestä kuuluisan.

DDC-I, Inc.

• Deos aika- ja avaruusosioitu RTOS, DO-178B, Level A -sertifikoitu vuodesta 1998
• HeartOS POSIX-pohjainen kova reaaliaikainen käyttöjärjestelmä

Digital Research, Inc.

• CP/M
  • CP/M CP/M Intel 8080/8085:lle ja Zilog Z80:lle
    • Personal CP/M, CP/M:n muunnos
    • CP/M Plus BDOS 3.0:n kanssa
  • CP/M-68K CP/M Motorola 68000:lle
  • CP/M-8000 CP/M Zilog Z8000:lle
  • CP/M-86 CP/M Intel 8088/8086:lle
    • CP/M-86 Plus
    • Personal CP/M-86
  • MP/M monta käyttäjää tukeva CP/M-80-muunnos
    • MP/M II
  • MP/M-86 monta käyttäjää tukeva CP/M-86-muunnos
    • MP/M 8-16, kaksoissuoritinmuunnos MP/M:stä 8086- ja 8080-suorittimille.
  • Concurrent CP/M, CP/M-80:n ja MP/M-80:n seuraaja
  • Concurrent CP/M-86, CP/M-86:n ja MP/M-86:n seuraaja
    • Concurrent CP/M 8-16, kaksoissuoritinmuunnos Concurrent CP/M:stä 8086- ja 8080-suorittimille.
  • Concurrent CP/M-68K, muunnos 68000-suorittimelle
• DOS
  • Concurrent DOS, Concurrent CP/M-86:n seuraaja. mukana PC-MODE
    • Concurrent PC DOS, Concurrent DOS -muunnos IBM PC -yhteensopiville tietokoneille
    • Concurrent DOS 8-16, kaksoissuoritinmuunnos Concurrent DOS:sta 8086- ja 8080-suorittimille
    • Concurrent DOS 286
    • Concurrent DOS XM, Concurrent DOS:n muunnos reaalitilalle EEMS-tuella
    • Concurrent DOS 386
      • Concurrent DOS 386/MGE, Concurrent DOS 386:n muunnos edistyneillä graafisten päätteiden toiminnoilla
  • Concurrent DOS 68K, Concurrent DOS:n käännös Motorola 68000 -suorittimelle, DOS-lähdekoodi käännettävissä
  • FlexOS 1.0 – 2.34, Concurrent DOS 286:een pohjautuva
    • FlexOS 186, FlexOS:n muunnos päätteille
    • FlexOS 286, FlexOS:n muunnos isäntäkoneille
      • Siemens S5-DOS/MT, FlexOS:iin pohjautuva teollisuusohjausjärjestelmille
      • IBM 4680 OS, FlexOS:iin pohjautuva myyntipistekäyttöjärjestelmä
        • Toshiba 4690 OS, FlexOS:iin ja IBM 4690 OS:iin pohjautuva myyntipistekäyttöjärjestelmä
    • FlexOS 386, FlexOS:n myöhempi muunnos isäntäkoneille
      • IBM 4690 OS, FlexOS:iin pohjautuva myyntipistekäyttöjärjestelmä
        • Toshiba 4690 OS, FlexOS:iin ja IBM 4690 OS:iin pohjautuva myyntipistekäyttöjärjestelmä
    • FlexOS 68K, Concurrent DOS 68K:n muunnos
  • Multiuser DOS, Concurrent DOS 386:n seuraaja
    • CCI Multiuser DOS
    • Datapac Multiuser DOS
      • Datapac System Manager, Datapac Multiuser DOS:n muunnos
    • IMS Multiuser DOS
      • IMS REAL/32, Multiuser DOS:n muunnos
        • IMS REAL/NG, REAL/32:n seuraaja
  • DOS Plus 1.1 – 2.1, yhden käyttäjän moniajokäyttöjärjestelmä, pohjautuu Concurrent DOS:in versioihin 4.1 – 5.0
  • DR-DOS 3.31 – 6.0, yhden käyttäjän natiivi DOS-käyttöjärjestelmä, pohjautuu Concurrent DOS:in versioon 6.0
    • Novell PalmDOS 1.0
    • Novell "Star Trek"
    • Novell DOS 7, yhden käyttäjän moniajokäyttöjärjestelmä, pohjautuu DR DOS:iin
    • Caldera OpenDOS 7.01
    • Caldera DR-DOS 7.02 ja korkeammat

Digital Equipment Corporation, Tandem Computers, Compaq, Hewlett-Packard

• Domain/OS (alun perin Aegis, HP:n ostamalta Apollo Computerilta)
• HP-UX
• Multi-Programming Executive (HP:lta)
• NonStop
• OS/8
• RSTS/E (monta käyttäjää tukeva osituskäyttöjärjestelmä PDP-11:lle)
• RSX-11 (monta käyttäjää tukeva moniajokäyttöjärjestelmä for PDP-11:lle)
• RT-11 (yhden käyttäjän käyttöjärjestelmä PDP-11:lle)
• TOPS-10 (PDP-10:lle)
• TENEX (TOPS-20-käyttöjärjestelmän edeltäjä BBN:ltä, PDP-10:lle)
• TOPS-20 (PDP-10:lle)
• Digital UNIX (OSF/1:een pohjautuva, myöhemmin HP:n Tru64 UNIX)
• Ultrix
• VMS (aluksi DEC:n ja HP:n, nyt VMS Software Inc.) VAX-minitietokonesarjalle, Alpha:lle ja Itanium i2 and i4:lle; myöhemmin nimeltään OpenVMS)
• WAITS (PDP-6:lle ja PDP-10:lle)

ENEA AB

• OSE Mukautuva, pienen jalanjäljen korkean suorituskyvyn reaaliaikainen käyttöjärjestelmä ohjaussuorittimille

Fujitsu

• Towns OS

General Electric

• Real-Time Multiprogramming Operating System

Google

Android 4.0.1 Galaxy Nexus -laitteella

• Google Chrome OS on suunniteltu yksinomaan verkkosovelluksille. Siitä ilmoitettiin ekan kerran 7. heinäkuuta 2009, on nyt julkisesti saatavilla ja julkaistiin kesällä 2011. Chrome OS:n lähdekoodi julkaistiin 19. marraskuuta 2009, Chromium OS:n tapaan BSD-lisenssillä.
  • Chromium OS on avoimen lähdekoodin kehitysversio Chrome OS:stä. Molemmat pohjautuvat Linux-ytimeen.
• Android on käyttöjärjestelmä mobiililaitteille. Se koostuu Android Runtime:stä (käyttäjäpuoli) ja Linuxista (ydin), jota on muokattu lisäämällä ajureita mobiililaitteistolle sekä poistamalla käyttämättömiä Linux-ajureita.

Green Hills Software

• INTEGRITY Reliable Operating system
• INTEGRITY-178B DO-178B-sertifikoitu versio INTEGRITY:stä.
• µ-velOSity Kevyt mikroydin.

Heathkit, Zenith Data Systems

• HDOS; pyöri H8- ja Heath/Zenith Z-89 -sarjan laitteilla
• HT-11 (mukautettu versio RT-11:stä) pyöri Heathkit H11 -laitteilla

Hewlett-Packard

• HP Multi-Programming Executive (MPE, MPE/XL ja MPE/iX) pyörivät HP 3000- ja HP e3000 -minitietokoneilla
• HP-UX; pyörii HP9000- ja Itanium-palvelimilla – pienistä tietokoneista suurtietokoneisiin
• NonStop OS; pyörii HP:n NonStop-sarjan Itanium-palvelimilla

Honeywell

• Multics
• GCOS
• CP-6

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.

IBM

Varhaiset suurtietokoneet: 1400, 1800, 701, 704, 709, 7090, 7094

• BESYS (for the IBM 7090)
• CTSS (The Compatible Time-Sharing System, developed at MIT's Computation Center for use on a modified IBM 7094)
• GM OS & GM-NAA I/O (for the IBM 704)
• IBSYS (tape based operating system for IBM 7090 and IBM 7094)
• IJMON (A bootable serial I/O monitor for loading programs for IBM 1400 and IBM 1800)
• SOS (SHARE Operating System, for the IBM 704 and 709)
• UMES (University of Michigan Executive System, for the IBM 704, 709, and 7090)

S/360, S/370 ja seuraavat suurtietokoneet

• OS/360 and successors on IBM S/360, S/370, and successor mainframes
  • OS/360 (first official OS targeted for the System/360 architecture),
    Saw customer installations of the following variations:
    • PCP (Primary Control Program, a kernel and a ground breaking automatic space allocating file system)
    • MFT (original Multi-programming with a Fixed number of Tasks, replaced by MFT II)
    • MFT II (Multi-Programming with a Fixed number of Tasks, had up to 15 fixed size application partitions, plus partitions for system tasks, initially defined at boot time but redefinable by operator command)
    • MVT (Multi-Programming Variable Tasks, had up to 15 application regions defined dynamically, plus additional regions for system tasks)
  • OS/VS (port of OS/360 targeted for the System/370 virtual memory architecture, "OS/370" is not correct name for OS/VS1 and OS/VS2, but rather refers to OS/VS2 MVS and MVS/SP Version 1),
    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)
    • OS/VS2 (Operating System/Virtual Storage 2, Virtual-memory version of OS/MVT but without multiprocessing support)
      • OS/VS2 R2 (called Multiple Virtual Storage, MVS, eliminated most need for VS1)
  • MVS/SE (MVS System Extensions)
  • MVS/SP (MVS System Product)
  • MVS/XA (MVS/SP V2. MVS supported eXtended Architecture, 31-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)
  • z/OS (OS/390 supported z/Architecture, 64-bit addressing)
• DOS/360 and successors on IBM S/360, S/370, and successor mainframes
  • BOS/360 (early interim version of DOS/360, briefly available at a few Alpha & Beta System/360 sites)
  • TOS/360 (similar to BOS above and more fleeting, able to boot and run from 2x00 series tape drives)
  • DOS/360 (Disk Operating System (DOS), multi-programming system with up to 3 partitions, first commonly available OS for System/360)
    • 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)
  • DOS/VS (First DOS offered on System/370 systems, provided virtual storage)
  • DOS/VSE (also known as VSE, upgrade of DOS/VS, up to 14 fixed size processing partitions )
  • VSE/SP (program product replacing DOS/VSE and VSE/AF)
  • VSE/ESA (DOS/VSE extended virtual memory support to 32-bit addresses (Extended System Architecture)).
  • z/VSE (latest version of the four decades old DOS lineage, supports 64-bit addresses, multiprocessing, multiprogramming, SNA, TCP/IP, and some virtual machine features in support of Linux workloads)
• CP/CMS (Control Program/Cambridge Monitor System) and successors on IBM S/360, S/370, and successor mainframes
  • CP-40/CMS (for System/360 Model 40)
  • CP-67/CMS (for System/360 Model 67)
  • VM/370 (Virtual Machine / Conversational Monitor System, virtual memory operating system for System/370)
  • VM/XA (VM/eXtended Architecture for System/370 with extended virtual memory)
  • 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)
• TPF Line (Transaction Processing Facility) on IBM S/360, S/370, and successor mainframes (largely used by airlines)
  • ACP (Airline Control Program)
  • TPF (Transaction Processing Facility)
  • z/TPF (z/Architecture extension)
• Unix-like on IBM S/360, S/370, and successor mainframes
  • AIX/370 (IBM's Advanced Interactive eXecutive, a System V Unix version)
  • AIX/ESA (IBM's Advanced Interactive eXecutive, a System V Unix version)
  • OpenSolaris for IBM System z
  • UTS (developed by Amdahl)
  • z/Linux
• Others on IBM S/360, S/370, and successor mainframes:
  • BOS/360 (Basic Operating System)
  • MTS (Michigan Terminal System, developed by a group of universities in the US, Canada, and the UK for the IBM System/360 Model 67, System/370 series, and compatible mainframes)
  • RTOS/360 (IBM's Real Time Operating System, ran on 5 NASA custom System/360-75s)
  • TOS/360 (Tape Operating System)
  • TSS/360 (IBM's Time Sharing System)
  • MUSIC/SP (developed by McGill University for IBM System/370)
  • ORVYL and WYLBUR (developed by Stanford University for IBM System/360)

PC-yhteensopivissa

• 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
• Katso myös: MS-DOS ja Windows
• OS/2
  • OS/2 1.x (developed jointly with Microsoft)
  • OS/2 2.x
  • OS/2 Warp 3
  • OS/2 Warp 4
  • eComStation (Warp 4.5/Workspace on Demand, rebundled by Serenity Systems International)
• IBM 4680 OS version 1 to 4, a POS operating system based on Digital Research's Concurrent DOS 286 and FlexOS 286 1.xx
  • IBM 4690 OS version 1 to 6.3, a successor to 4680 OS based on Novell's FlexOS 286/FlexOS 386 2.3x
    • Toshiba 4690 OS version 6.4, a successor to 4690 OS 6.3

Muilla laitealustoilla

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

International Computers Limited

• J ja MultiJob System 4 -sarjan suurtietokoneille
• GEORGE 2/3/4 GEneral ORGanisational Environment, ICL 1900-sarjan suurtietokoneissa
• Executive, 1900- ja 290x-sarjan minitietokoneissa. Executiven mukautettua versiota käytettiin myös osana GEORGE 3- ja 4-järjestelmiä.
• TME, ME29-minitietokoneissa
• ICL VME, mukaan lukien aikaiset versiot VME/B and VME/2900, ICL 2900 -sarjan sekä Series 39 -sarjan suurtietokoneissa, S3-kielellä toteutettu
• VME/K hyvin pienillä 2900-koneilla

Jide

• Remix OS

Lynx Real-time Systems, LynuxWorks, Lynx Software Technologies

• LynxOS

Micrium Inc.

• MicroC/OS-II (pieni ennakoiva tärkeysjärjestyspohjainen moniajoydin)
• MicroC/OS-III (pieni ennakoiva tärkeysjärjestyspohjainen moniajoydin, tehtävien ja tärkeystasojen määrä rajoittamaton, kiertovuorottelu)

Microsoft Corporation

• Xenix (Unixin lisensoitu versio; lisensoitiin SCO:lle vuonna 1987)
• MSX-DOS (MS Japan -osaston kehittämä, MSX-sarjan 8-bittisille tietokoneille)
• MS-DOS (yhdessä IBM;n kanssa, versiot 1.0–6.22)
• Windows (16- ja 32-bittinen ennakoiva sekä yhteistyömoniajo, pyörii MS-DOS:n päällä)
  • Windows 1.0 (Windows 1)
  • Windows 2.0 (Windows 2 – erillinen versio i386-suorittimelle)
  • Windows 3.0 (Windows 3)
  • Windows 3.1x (Windows 3.1)
  • Windows for Workgroups 3.1 (koodinimi Snowball)
  • Windows 3.2 (vain kiinaksi)
  • Windows for Workgroups 3.11
  • Windows 95 (koodinimi Chicago – Windows 4.0)
  • Windows 98 (koodinimi Memphis – Windows 4.1)
  • Windows Millennium Edition (Windows ME – Windows 4.9)
• Windows NT (täysin 32- tai 64-bittinen ydin, ei perustu MS-DOS:iin)
  • Windows NT 3.1
  • Windows NT 3.5
  • Windows NT 3.51
  • Windows NT 4.0
  • Windows 2000 (Windows NT 5.0)
  • Windows XP (Windows NT 5.1)
  • Windows Server 2003 (Windows NT 5.2)
  • Windows Fundamentals for Legacy PCs (Windows XP:hen pohjautuva)
  • Windows Vista (Windows NT 6.0)
  • Windows Azure (Cloud OS Platform) 2009
  • Windows Home Server (Windows Server 2003:een pohjautuva)
  • Windows Server 2008 (Windows Vistaan pohjautuva)
  • Windows 7 (Windows NT 6.1)
  • Windows Server 2008 R2 (Windows 7:ään pohjautuva)
  • Windows Home Server 2011 (Windows Server 2008 R2:een pohjautuva)
  • Windows Server 2012 (Windows 8:aan pohjautuva)
  • Windows 8 (Windows NT 6.2)
  • Windows Phone 8
  • Windows 8.1 (Windows NT 6.3)
  • Windows Server 2012 R2 (Windows 8.1:een pohjautuva)
  • Xbox Onen käyttöjärjestelmä
  • Windows Phone 8.1
  • Windows 10 (Windows NT 10.0)
  • Windows 10 Mobile
  • Windows Server 2016
  • Windows 11
• Windows CE (käyttöjärjestelmä taskulaitteille, sulautetuille laitteille ja reaaliaikaisiin sovelluksiin, muistuttaa muita Windows-versioita)
  • Windows CE 3.0
  • Windows CE 5.0
  • Windows CE 6.0
  • Windows Mobile (Windows CE:hen pohjautuva, mutta pienempi kokomitta)
  • Windows Phone 7
• Singularity – pääosin hallitulla koodilla (C#) kirjoitettu tutkimuskäyttöjärjestelmä
• Midori – hallitun koodin käyttöjärjestelmä
• Xbox 360:n käyttöjärjestelmä
• Xbox Onen käyttöjärjestelmä

MontaVista

• MontaVista Mobilinux

NCR Corporation

• TMX – Transaction Management eXecutive
• IMOS - Interactive Multiprogramming Operating System (noin 1978), NCR Century 8200 -sarjan minitietokoneille
• VRX - Virtual Resource eXecutive

Nintendo

• es on alun perin Nintendon ja myöhemmin Esrillen kehittämä käyttöjärjestelmä. Sen lähdekoodi on avointa. Järjestelmä pyörii natiivisti x86-alustoilla.

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.
• UnixWare
  • Novell "SuperNOS", a never released merge of NetWare and UnixWare
• Novell "Corsair"
  • Novell "Exposé"
• Open Enterprise Server, the successor to NetWare.

Quadros Systems

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

RCA

• 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
• Unison RTOS 32 Bit Open Standards, Linux Compatible, Ultra Tiny Size, Modularity, POSIX-compliant RTOS that supports a variety of wireless modules and provides a complete set of security protocols

Samsung Electronics

• Bada
• Tizen

SCO, SCO Group

• Xenix, Unix System III based distribution for the Intel 8086/8088 architecture
  • Xenix 286, Unix System V Release 2 based distribution for the Intel 80286 architecture
  • Xenix 386, Unix System V Release 2 based distribution for the Intel 80386 architecture
• 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 Open Desktop, the first 32-bit graphical user interface for UNIX Systems running on Intel processor-based computers. Based on SCO Unix
• SCO OpenServer 5, AT&T UNIX System V Release 3 based
• SCO OpenServer 6, SVR5 (UnixWare 7) based kernel with SCO OpenServer 5 application and binary compatibility, system administration, and user environments
• UnixWare
  • UnixWare 2.x, based on AT&T System V Release 4.2MP
  • UnixWare 7, UnixWare 2 kernel plus parts of 3.2v5 (UnixWare 2 + OpenServer 5 = UnixWare 7). Referred to by SCO as SVR5

Scientific Data Systems (SDS)

• Berkeley Timesharing System for the SDS 940

Sciopta Systems GmbH

• SCIOPTA Pre-emptive, priority-based real-time kernel (IEC61508 certified)

SYSGO

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

Tandy Corporation

• TRSDOS; A floppy-disk-oriented OS supplied by Tandy/Radio Shack for their 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.
• NewDos/80; A third-party OS for Tandy's TRS-80 personal computers.
• DeskMate; Operating system created by Tandy Corporation and introduced with the Tandy 1000 computer.

TCSC (later NCSC)

• Edos – enhanced version of IBM's 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 TI's embedded devices.

TRON Project

• TRON (avoin RTOS kerneli)
• T-Kernel

Unisys

• Unisys MCP
• Unisys OS 2200 operating system

UNIVAC, Unisys

• EXEC I
• EXEC II
• EXEC 8 Ran on 1100 series.
• VS/9, successor to RCA TSOS

Wang Laboratories

• WPS Wang Word Processing System. Micro-code based system.
• OIS Wang Office Information System. Successor to the WPS. Combined the WPS and VP/MVP systems.
• Wang VS Operating System (VSOS) – used on the VS line of minicomputer systems.

WICAT

• WICAT Multiuser Computer System (WMCS). MC-68K multiuser O/S for their proprietary microcomputers, used mainly for CBT systems

Wind River Systems

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

Muita

Lisp-based

• Lisp Machines, Inc. (also known as LMI) used an operating system written in MIT's Lisp Machine Lisp.
• 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.
• Texas Instruments' Explorer Lisp machine workstations also had systems code written in Lisp Machine Lisp.
• Xerox 1100 series of Lisp machines used an operating system also written in Interlisp, and was also ported to a virtual machine called "Medley."
• PilOS Stand alone operating system. It is a full blown 64-bit PicoLisp runs directly on a standard x86-64 PC hardware.

Non-standard language-based

• Pilot operating system (used in Xerox Star workstations) was written in the Mesa programming language.
• PERQ Operating System (POS) was written in PERQ Pascal.

Other proprietary non-Unix-like

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

Other proprietary Unix-like and POSIX-compliant

• Aegis (Apollo Computer)
• Amiga Unix (Amiga-versio Unix System V julkaisuversiosta 3.2 Amiga A2500UX:lle ja SVR4-julkaisusta Amiga A3000UX:lle. Aloitettu vuonna 1990, viimeinen versio vuonna 1992.)
• Coherent (Unixin kaltainen käyttöjärjestelmä Mark Williamsilta henkilökohtaisille tietokoneille)
• DC/OSx (DataCenter/OSx—an operating system developed by Pyramid Technology for its MIPS-based systems)
• DG/UX (Data General Corp)
• DNIX from DIAB
• DSPnano RTOS (POSIX nanokernel, DSP Optimized, Open Source)
• HeliOS developed and sold by Perihelion Software mainly for transputer based systems
• Interactive Unix (a port of the UNIX System V operating system for Intel x86 by Interactive Systems Corporation)
• IRIX from SGI
• MeikOS
• NeXTSTEP (developed by NeXT; a Unix-based OS based on the Mach microkernel)
• OS-9 Unix-like RTOS. (OS from Microware for Motorola 6809 based microcomputers)
• OS9/68K Unix-like RTOS. (OS from Microware for Motorola 680x0 based microcomputers; based on OS-9)
• OS-9000 Unix-like RTOS. (OS from Microware for Intel x86 based microcomputers; based on OS-9, written in C)
• OSF/1 (developed into a commercial offering by Digital Equipment Corporation)
• OpenStep
• QNX (POSIX, microkernel OS; usually a real time embedded OS)
• Rhapsody (an early form of Mac OS X)
• RISC iX – derived from BSD 4.3, by Acorn computers, for their ARM family of machines
• RISC/os (a port by MIPS Technologies of 4.3BSD for its MIPS-based computers)
• RMX
• SCO UNIX (from SCO, bought by Caldera who renamed themselves SCO Group)
• SINIX (a port by SNI of Unix to the MIPS architecture)
• Solaris (Sun Microsystemsiltä, Oraclen ostama; System V-pohjainen korvaaja SunOS:lle)
• SunOS (BSD-pohjainen Unix-käyttöjärjestelmä varhaiselle Sun Microsystemsin laitteistolle)
• SUPER-UX (a port of System V Release 4.2MP with features adopted from BSD and Linux for NEC SX architecture supercomputers)
• System V (a release of AT&T Unix, 'SVR4' was the 4th minor release)
• 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)
• Trusted Solaris (Solaris with kernel and other enhancements to support multilevel security)
• UniFLEX (Unix-like OS from TSC for DMA-capable, extended addresses, Motorola 6809 based computers; e.g. SWTPC, GIMIX and others)
• Unicos (Unix-versio Crayn supertietokoneille, pääasiassa vektorilaskentaan)
• 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 NSA's C2 security level certification.)
• Zenix, Zenith corporations Unix (a popular USA electronics maker at the time)

Ei-kaupalliset/avoimet

Unix-kaltaiset

Research and other POSIX-compliant

• MINIX (study OS developed by Andrew S. Tanenbaum in the Netherlands)
• Plan 9 from Bell Labs (distributed OS developed at Bell Labs, based on original Unix design principles yet functionally different and going much further)
  • Inferno (distributed OS derived from Plan 9, originally from Bell Labs)
  • Plan B (distributed OS derived from Plan 9 and Off++ microkernel)
• Unix (Bell Labs:ssa 1970-luvulla kehitetty käyttöjärjestelmä, Ken Thompsonin aloittama)
• Xinu (Study OS developed by Douglas E. Comer in the United States)

Free and open source

Ubuntu, esimerkki Linux-järjestelmästä

• 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')
    • DragonFlyBSD, forked from FreeBSD 4.8
    • MidnightBSD, forked from FreeBSD 6.1
    • Darwin, created by Apple using FreeBSD and NeXTSTEP
    • PC-BSD
    • GhostBSD
    • TrueOS (previously known as PC-BSD)
  • NetBSD (an embedded device BSD variant)
    • OpenBSD forked from NetBSD
      • Bitrig forked from OpenBSD
• GNU
• Linux
  • Luettelo Linux-jakelupaketeista
• Android x86
• Cray Linux Environment
• illumos, contains original Unix (SVR4) code derived from the OpenSolaris (discontinued by Oracle in favor of Solaris 11 Express)
  • 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.
• RTEMS (Real-Time Executive for Multiprocessor Systems)
• Syllable Desktop
• Univention Corporate Server
• VSTa
  • FMI/OS, successor of VSTa

Other

• Plurix
• TUNIS (University of Toronto)

Non-Unix-like

Research

• Amoeba (research OS by Andrew S. Tanenbaum)
• Croquet
• EROS microkernel, capability-based
  • CapROS microkernel EROS successor.
  • Coyotos microkernel EROS successor, goal: be first formally verified OS.
• HelenOS research and experimental operating system
• House – Haskell User's Operating System and Environment, research OS written in Haskell and C
• ILIOS Research OS designed for routing
• L4 second generation microkernel
• Mach (from OS kernel research at Carnegie Mellon University; see NeXTSTEP)
• Nemesis Cambridge University research OS – detailed quality of service abilities
• Spring (research OS from Sun Microsystems)
• 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

Free and open source

• Cosmos (written in C#)
• FreeDOS (open source DOS variant)
• Haiku (open source inspired by BeOS, under development)
• Ghost OS (written in Assembly, C/C++)
• ITS written by MIT students (for the PDP-6 and PDP-10) (written in MIDAS)
• osFree OS/2 Warp open source clone.
• OSv (written in C++)
• Phantom OS (persistent object oriented)
• ReactOS, open source OS designed to be binary compatible with Windows NT and its variants (Windows XP, Windows 2000, etc.); currently in development phase
• SharpOS (written in .NET C#)
• TempleOS (written in HolyC)
• Redox OS (written in Rust)

Disk operating systems (DOS)

Pääartikkeli: 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 (IBM's DOS variant, developed jointly with Microsoft, versions 1.0–7.0, 2000, 7.10)
  • MS-DOS (Microsoft's DOS variant for OEM, developed jointly with IBM, versions 1.x–6.22 Microsoft's now abandoned DOS variant)
• Concurrent CP/M-86 3.1 (BDOS 3.1) with PC-MODE (Digital Research's successor of CP/M-86 and MP/M-86)
  • Concurrent DOS 3.1-4.1 (BDOS 3.1-4.1)
    • Concurrent PC DOS 3.2 (BDOS 3.2) (Concurrent DOS variant for IBM compatible PCs)
      • 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 DOS 8-16 (dual-processor variant of Concurrent DOS for 8086 and 8080 CPUs)
    • Concurrent DOS 286 1.x
      • FlexOS 1.00-2.34 (derivative of Concurrent DOS 286)
        • FlexOS 186 (variant of FlexOS for terminals)
        • FlexOS 286 (variant of FlexOS for hosts)
          • Siemens S5-DOS/MT (industrial control system based on FlexOS)
          • IBM 4680 OS (POS operating system based on FlexOS)
          • IBM 4690 OS (POS operating system based on FlexOS)
            • Toshiba 4690 OS (POS operating system based on IBM 4690 OS and FlexOS)
        • FlexOS 386 (later variant of FlexOS for hosts)
          • IBM 4690 OS (POS operating system based on FlexOS)
            • Toshiba 4690 OS (POS operating system based on IBM 4690 OS and FlexOS)
    • Concurrent DOS 386 1.0, 1.1, 2.0, 3.0 (BDOS 5.0-6.2)
      • 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
          • Datapac System Manager 7 (derivative of Datapac Multiuser DOS)
        • IMS Multiuser DOS 5.1, 7.0, 7.1 (BDOS 6.6-6.7)
          • 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 REAL/NG (successor of REAL/32)
    • 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)
      • 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)
        • Novell PalmDOS 1 (BDOS 7.0)
        • Novell DR DOS "StarTrek"
        • Novell DOS 7 (single-user, multi-tasking system derived from DR DOS, BDOS 7.2)
          • Novell DOS 7 updates 1-10 (BDOS 7.2)
            • Caldera OpenDOS 7.01 (BDOS 7.2)
              • Enhanced DR-DOS 7.01.0x (BDOS 7.2)
                • Dell Real Mode Kernel (DRMK)
          • Novell DOS 7 updates 11-15.2 (BDOS 7.2)
            • Caldera DR-DOS 7.02-7.03 (BDOS 7.3)
              • DR-DOS "WinBolt"
              • OEM DR-DOS 7.04-7.05 (BDOS 7.3)
              • OEM DR-DOS 7.06 (PQDOS)
              • OEM DR-DOS 7.07 (BDOS 7.4/7.7)
• FreeDOS (open source DOS variant)
• ProDOS (operating system for the Apple II series computers)
• PTS-DOS (DOS variant by Russian company Phystechsoft)
• TurboDOS (Software 2000, Inc.) for Z80 and Intel 8086 processor-based systems
• Multi-tasking user interfaces and environments for DOS
  • DESQview + QEMM 386 multi-tasking user interface for DOS
  • DESQView/X (X-windowing GUI for DOS)

Verkkokäyttöjärjestelmät

Pääartikkeli: Verkkokäyttöjärjestelmä

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

Generic, commodity, and other

• BLIS/COBOL
• Bluebottle also known as AOS (a concurrent and active object update to the Oberon operating system)
• BS1000 by Siemens AG
• BS2000 by Siemens AG, now BS2000/OSD from Fujitsu-Siemens Computers (formerly Siemens Nixdorf Informationssysteme)
• BS3000 by Siemens AG (functionally similar to OS-IV and MSP from Fujitsu)
• 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
• JNode (Java New Operating System Design Effort), written 99% in Java (native compiled), provides own JVM and JIT compiler. Based on GNU Classpath.
• 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.
• KERNAL (default OS on Commodore 64)
• MERLIN for the Corvus Concept
• MorphOS (Amiga compatible)
• MSP by Fujitsu (successor to OS-IV), now MSP/EX, also known as Extended System Architecture (EXA), for 31-bit mode
• NetWare (networking OS by Novell)
• Oberon (operating system) (developed at ETH-Zürich by Niklaus Wirth et al.) for the Ceres and Chameleon workstation projects
• OSD/XC by Fujitsu-Siemens (BS2000 ported to an 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)
• Sinclair QDOS (multitasking for the Sinclair QL computer)
• SSB-DOS (by TSC for Smoke Signal Broadcasting; a variant of FLEX in most respects)
• SymbOS (GUI based multitasking operating system for Z80 computers)
• Symobi (GUI based modern micro-kernel OS for x86, ARM and PowerPC processors, developed by Miray Software; used and developed further at Technical University of Munich)
• TripOS, 1978
• TurboDOS (Software 2000, Inc.)
• 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)
• VOS by Stratus Technologies with strong influence from Multics
• VOS3 by Hitachi for its IBM-compatible mainframes, based on IBM's MVS
• VM2000 by Siemens AG
• Visi On (first GUI for early PC machines; not commercially successful)
• VPS/VM (IBM based, main operating system at Boston University for over 10 years.)

For Elektronika BK

• ANDOS
• CSI-DOS
• KMON
• MK-DOS

Harrastepohjaiset

• AROS (AROS Research Operating System, formerly known as Amiga Research Operating System)
• AtheOS (branched to become Syllable Desktop)
  • Syllable Desktop (a modern, independently originated OS; see AtheOS)
• BareMetal
• DexOS – 32-bit operating system written in x86 assembly
• DSPnano RTOS
• EmuTOS
• EROS (Extremely Reliable Operating System)
• HelenOS, based on a preemptible microkernel design
• LSE/OS
• MenuetOS (extremely compact OS with GUI, written entirely in FASM assembly language)
  • KolibriOS (a fork of MenuetOS)
• S-OS (a minimal DOS for Z80 machines)

Sulautetut

Kämmentietokoneet (PDA)

• DIP DOS on Atari Portfolio
• Embedded Linux
  • Android
  • Firefox OS
  • Ångström distribution
  • Familiar Linux
  • Mæmo based on Debian deployed on Nokia's Nokia 770, N800 and N810 Internet Tablets.
  • MeeGo merger of Moblin and Maemo
  • OpenZaurus
  • webOS from Palm, Inc., later Hewlett-Packard via acquisition, and most recently at LG Electronics through acquisition from Hewlett-Packard
• Inferno (hajautettu käyttöjärjestelmä Bell Labsilta)
• iOS
• Magic Cap
• MS-DOS on Poqet PC, HP 95LX, HP 100LX, HP 200LX, HP 1000CX, HP OmniGo 700LX
• NetBSD
• Newton OS on Apple MessagePad
• Palm OS from Palm, Inc; now spun off as PalmSource
• PEN/GEOS on HP OmniGo 100 and 120
• PenPoint OS
• Plan 9 from Bell Labs
• PVOS
• Symbian OS
  • EPOC
• Windows CE, from Microsoft
  • Pocket PC from Microsoft, a variant of Windows CE
  • Windows Mobile from Microsoft, a variant of Windows CE
  • Windows Phone from Microsoft

Mediasoittimet

• DSPnano RTOS
• iOS
• iPod software
• ipodlinux
• iriver clix OS
• RockBox

Mobiililaitteet ja älypuhelimet

Pääartikkeli: Mobiilikäyttöjärjestelmä

• BlackBerry OS
• Embedded Linux
  • Access Linux Platform
  • Android
  • bada
  • Firefox OS (projektinimi: Boot to Gecko)
  • Openmoko Linux
  • OPhone
  • MeeGo (Maemon ja Moblinin yhdistymisestä)
  • Mobilinux
  • MotoMagx
  • Qt Extended
  • Sailfish OS
  • Tizen (aiemmin nimellä LiMo Platform)
  • Ubuntu Touch
  • webOS
• PEN/GEOS, GEOS-SC, GEOS-SE
• iOS
• Palm OS
• Symbian platform (seuraaja Symbian OS:lle)
• Windows Mobile (korvaaja: Windows Phone)
• BlackBerry 10

Reitittimet

• AlliedWare, Allied Telesis (eli Allied Telesyn)
• AirOS, Ubiquiti Networks
• CatOS, Cisco Systems
• Cisco IOS (alkujaan Internetwork Operating System), Cisco Systems
• DD-WRT, NewMedia-NET
• Inferno (hajautettu käyttöjärjestelmä Bell Labsilta)
• IOS-XR, Cisco Systems
• IronWare, Foundry Networks
• JunOS, Juniper Networks
• LibreWRT GNU/Linux-libre
• OpenWrt
• RouterOS, Mikrotik
• ScreenOS, Juniper Networks, alkujaan Netscreeniltä
• Timos, Alcatel-Lucent
• FTOS, Force10 Networks
• RTOS, Force10 Networks
• Luettelo langattomien reittimien firmware-projekteista

Muut sulautetut

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

LEGO Mindstorms

• brickOS
• leJOS

Capability-based

• Cambridge CAP computer operating system demonstrated the use of security capabilities, both in hardware and software, also a useful fileserver, implemented in ALGOL 68C
• Flex machine – Custom microprogrammable hardware, with an operating system, (modular) compiler, editor, * garbage collector and filing system all written in ALGOL 68.
• HYDRA – Carnegie Mellon -yliopiston C.mmp-tietokoneelle, toteutettu BLISS-ohjelmointikielellä
• KeyKOS nanokernel
  • EROS microkernel
    • CapROS EROS successor
    • Coyotos EROS successor, goal: be first formally verified OS
• V from Stanford, early 1980s

Aiheesta muualla

• Suuri luettelo käyttöjärjestelmiä (englanniksi)
• Google Sheets -taulukko, jossa käyttöjärjestelmäluettelo (englanniksi)