Luettelo käyttöjärjestelmistä

Tämä on luettelo **[[käyttöjärjestelmä|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

* 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.
* *[[Green Hills Software#Real-time operating systems|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&nbsp;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&mdash;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

### Unixin-kaltaiset
#### Tutkimus ja muut POSIX-yhteensopivat
* 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)
#### Ilmaiset ja avoimen lähdekoodin

* 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
#### Muut
* 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)

* 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

* 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

* 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

## Lähteet

## Aiheesta muualla
* Suuri luettelo käyttöjärjestelmiä (englanniksi)
* Google Sheets -taulukko, jossa käyttöjärjestelmäluettelo (englanniksi)