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.

Proprietary

[Acorn Computers]

Amazon">Amazon (company)">Amazon

Amiga Inc.

[Amstrad]

Apple">Apple Inc.">Apple

[Apollo Computer], [Hewlett-Packard]

[Atari]

BAE Systems">BAE Systems Electronic Systems">BAE Systems

[Be Inc.]

[Bell Labs]

Non-Unix Operating Systems:

[Burroughs Corporation], [Unisys]

CII">Compagnie Internationale d'Informatique">CII

[Commodore International]

[Control Data Corporation]

Lower 3000 series

Upper 3000 series

6x00 and related Cyber

Star-100

Multiple Console Time Sharing System, from General Motors Research

[CloudMosa]

[Convergent Technologies]

[Cromemco]

[Data General]

[Datapoint]

[DDC-I, Inc.]

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

Digital Research, Inc.">Digital Research">Digital Research, Inc.

[Digital Equipment Corporation], [Compaq], [Hewlett-Packard], [Hewlett Packard Enterprise]

[ENEA AB]

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

[Fujitsu]

[GEC Computers]

[General Electric], [Honeywell], Bull">Groupe Bull">Bull

[Google]

[Green Hills Software]

[Harris Computer Systems]

[Heathkit], [Zenith Data Systems]

[Hewlett-Packard], [Hewlett Packard Enterprise]

[Honeywell]

  • CP-6, CP-V work-alike for Honeywell Level/66

[Huawei]

[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.
  • iMAX 432 - an operating system for systems based on Intel's iAPX 432 architecture.

[IBM]

On early mainframes: 1410, 7010, 704, 709, 7090, 7094, 7040, 7044, 7030

On S/360, S/370, and successor mainframes

On PC and Intel x86 based architectures

On other hardware platforms

[International Computers Limited]

Jide

[Jolla]

[KaiOS]

Lynx Real-time Systems, LynuxWorks, Lynx Software Technologies

Meizu

[Microsoft Corporation]

MITS

[MontaVista]

[Motorola]

NCR Corporation">NCR Voyix">NCR Corporation

[NeXT]

[Nintendo]

[Novell]

Open Mobile Platform

Quadros Systems

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

RCA

RoweBots

[Samsung Electronics]

  • Bada
  • Tizen is an operating system based on the Linux kernel, a project within the Linux Foundation and is governed by a Technical Steering Group 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.
  • Orsay
  • One UI - Android skin

Scientific Data Systems (SDS)

SDS 900 series

SDS Sigma series

SCO, SCO Group

Source:

[Silicon Laboratories] (formerly Micrium Inc.)

[Sinclair Research]

  • Sinclair BASIC was used in the 8-bit home computers from Sinclair Research and Timex Sinclair. It was included in the ROM, and the computers booted to the Basic interpreter. Various versions exist, with the latter ones supporting disk drive operations.

[Sony]

[SYSGO]

[Tandem Computers], [Compaq], [Hewlett-Packard], [Hewlett Packard Enterprise]

  • NonStop OS - formerly Guardian, then NonStop Kernel, then NonStop OS; runs on HPE's NonStop line of servers

[Tandy Corporation]

TCSC (later NCSC)

Texas Instruments

TRON Project

UNIVAC, Unisys

Valve

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.

Weston Embedded Solutions

  • μC/OS-II – a small pre-emptive priority based multi-tasking kernel
  • μC/OS-III – a small pre-emptive priority based multi-tasking kernel, with unlimited number of tasks and priorities, and round-robin scheduling
  • Cesium RTOS - commercial continuation of Micrium's μC/OS-III forked from the open-sources release

Wind River Systems

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

Zilog

Other

Lisp-based

For Elektronika BK

Non-standard language-based

Other proprietary non-Unix-like

Other proprietary Unix-like and POSIX-compliant

Non-proprietary

Unix or Unix-like

Non-Unix

Research

Unix or Unix-like

Non-Unix

Disk operating systems (DOS)

Network operating systems

Generic, commodity, and other

Hobby

Embedded

Mobile operating systems

Routers

Other embedded

LEGO Mindstorms

Capability-based

Category links

  • Operating systems
  • * Embedded operating systems
  • * Real-time operating systems