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 ...

s that

Microsoft Microsoft Corporation is an American multinational corporation, multinational technology company, technology corporation producing Software, computer software, consumer electronics, personal computers, and related services headquartered at th ...

gave their

operating system An operating system (OS) is system software that manages computer hardware, software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ef ...

s, see Microsoft codenames. 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, originally codenamed "Ozone", was a member of the Windows Mobile family of mobile operating systems, released on June 23, 2003. It was the first Microsoft mobile OS to be called "Windows Mobile" and was based on Windows CE 4. ...

* Windows Mobile 2003 SE *

Windows Mobile 5 Windows Mobile 5.0, originally codenamed "Magneto",De Herrera, Chris pocketpcfaq.com. Retrieved September 6, 2007. was released at Microsoft's Mobile and Embedded Developers Conference 2005 in Las Vegas, May 9–12, 2005. Microsoft offered mains ...

* Windows Mobile 6

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 th ...
gaming

* Xbox system software *

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 optim ...

* Xbox One and Xbox Series X/S system software

OS/2

Unix and Unix-like

* Xenix *

Nokia X platform The Nokia X platform was a Linux-based mobile operating system and software platform originally developed by Nokia, and subsequently by Microsoft Mobile. Introduced on 24 February 2014, it was forked from Android and used on all the devices of ...

Microsoft Linux distributions Microsoft, a technology company historically known for its opposition to the open source software paradigm, turned to embrace the approach in the 2010s. From the 1970s through 2000s under CEOs Bill Gates and Steve Ballmer, Microsoft viewed the ...

* 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 serv ...

* CBL-Mariner

Other operating systems

* MS-Net * LAN Manager *

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 PC ...

* 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 An operating system (OS) is system software that manages computer hardware, software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ef ...