This is a list of Microsoft written and published operating systems. For the

codename A code name, call sign or cryptonym is a code word or name used, sometimes clandestinely, to refer to another name, word, project, or person. Code names are often used for military purposes, or in espionage. They may also be used in industrial c ...

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Microsoft Microsoft Corporation is an American multinational technology corporation producing computer software, consumer electronics, personal computers, and related services headquartered at the Microsoft Redmond campus located in Redmond, Washin ...

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operating system An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also i ...

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Microsoft codenames Microsoft codenames are given by Microsoft to products it has in development before these products are given the names by which they appear on store shelves. Many of these products (new versions of Windows in particular) are of major significance ...

. For another list of versions of Microsoft Windows, see, List of Microsoft Windows versions.

MS-DOS

* See MS-DOS Versions for a full list.

Windows

Windows 10/11 and Windows Server 2016/2019/2022

Windows Mobile

* Windows Mobile 2003 *

Windows Mobile 2003 SE Windows Mobile is a discontinued family of mobile operating systems developed by Microsoft for smartphones and personal digital assistants. Its origin dated back to Windows CE in 1996, though Windows Mobile itself first appeared in 2000 as Pock ...

* Windows Mobile 5 *

Windows Mobile 6 Windows Mobile 6, formerly codenamed "Crossbow",De Herrera, Chris pocketpcfaq.com. Retrieved September 6, 2007. was the version of Windows Mobile released on February 12, 2007 at the Mobile World Congress, 3GSM World Congress 2007. It comes in thr ...

Windows Phone

Xbox Xbox is a video gaming brand created and owned by Microsoft. The brand consists of five video game consoles, as well as applications (games), streaming services, an online service by the name of Xbox network, and the development arm by the ...
gaming

Xbox system software The Xbox system software is the operating system developed exclusively for the Xbox consoles. Across the four generations of Xbox consoles, the software has been based on a version of Microsoft Windows and incorporating DirectX features optimize ...

Xbox 360 system software The Xbox system software is the operating system developed exclusively for the Xbox consoles. Across the four generations of Xbox consoles, the software has been based on a version of Microsoft Windows and incorporating DirectX features optimi ...

* Xbox One and Xbox Series X/S system software

OS/2

Unix and Unix-like

Xenix Xenix is a discontinued version of the Unix operating system for various microcomputer platforms, licensed by Microsoft from AT&T Corporation in the late 1970s. The Santa Cruz Operation (SCO) later acquired exclusive rights to the software, and ...

* Nokia X platform * Microsoft Linux distributions * Azure Sphere * SONiC *

Windows Subsystem for Linux Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for ser ...

CBL-Mariner CBL-Mariner (in which CBL stands for Common Base Linux) is a free and open-source Linux distribution that Microsoft has developed. It is the base container OS for Microsoft Azure services and the graphical component of WSL 2. Overview CBL-Mar ...

Other operating systems

MS-Net MS-Net, sometimes stylized as MS-NET, was an early network operating system sold by Microsoft during the earliest days of local area networking (LANs). Overview MS-Net was not a complete networking system of its own; Microsoft licensed it to vend ...

LAN Manager LAN Manager is a discontinued network operating system (NOS) available from multiple vendors and developed by Microsoft in cooperation with 3Com Corporation. It was designed to succeed 3Com's 3+Share network server software which ran atop a h ...

MIDAS Midas (; grc-gre, Μίδας) was the name of a king in Phrygia with whom several myths became associated, as well as two later members of the Phrygian royal house. The most famous King Midas is popularly remembered in Greek mythology for his ...

* Singularity ** Midori *

Zune Zune is a discontinued line of digital media products and services marketed by Microsoft from November 2006 until its discontinuation in June 2012. Zune consisted of a line of portable media players, digital media player software for Windows Per ...

* KIN OS * Nokia Asha platform * Barrelfish

Time line

External links

Concise Microsoft O.S. Timeline
by Bravo Technology Center {{Microsoft operating systems Micro * Operating systems