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.


Acorn Computers


Amiga Inc.


Apple Inc.

Apollo Computer, Hewlett-Packard


BAE Systems

Be Inc.

Bell Labs

Non-Unix Operating Systems:

Burroughs Corporation, Unisys

Commodore International

Control Data Corporation

Lower 3000 series

Upper 3000 series

6x00 and related Cyber


Convergent Technologies


Data General


DDC-I, Inc.

Digital Research, Inc.

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



General Electric, Honeywell, Bull


Android OS on the Samsung Galaxy Z smartphones
Android OS on the Samsung Galaxy Z smartphones

Green Hills Software

Harris Computer Systems

Heathkit, Zenith Data Systems

Hewlett-Packard, Hewlett Packard Enterprise



Intel Corporation


Further information: History of IBM mainframe operating systems

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

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

Further information: History of CP/CMS

On PC and Intel x86 based architectures

See also: MS-DOS and Windows

On other hardware platforms

International Computers Limited




Lynx Real-time Systems, LynuxWorks, Lynx Software Technologies


Micrium Inc.

Microsoft Corporation




NCR Corporation




Open Mobile Platform

Quadros Systems



Samsung Electronics

Scientific Data Systems (SDS)

SCO, SCO Group

Sinclair Research



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

Tandy Corporation

TCSC (later NCSC)

Texas Instruments

TRON Project

UNIVAC, Unisys

Wang Laboratories

Wind River Systems




For Elektronika BK

Non-standard language-based

Other proprietary non-Unix-like

Other proprietary Unix-like and POSIX-compliant


Unix or Unix-like



Unix or Unix-like


Disk operating systems (DOS)

Main article: Disk operating system

Network operating systems

Main article: Network operating system

Generic, commodity, and other


Main article: Hobbyist operating system


Mobile operating systems

Main article: Mobile operating system


Other embedded

LEGO Mindstorms


See also

Category links


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