List of Windows operating systems

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Personal computer versions

In this section, a client version of Windows is a version that end-users or OEMs can install on personal computers, including desktop computers, laptops and workstations.

Name Version Release date Codename Additional information Editions
Windows 1.0x
Windows 1.00 1.00 November 6, 1985 First release of Windows N/A
Windows 1.01 1.01 November 20, 1985
Windows 1.02 1.02 May 14, 1986
Windows 1.03 1.03 August 21, 1986
Windows 1.04 1.04 April 10, 1987
Windows 1.05 1.05 June 1987
Windows 2.0x
Windows 2.00 2.00 December 9, 1987 N/A
Windows 2.01 2.01
Windows 2.02 2.02
Windows 2.03 2.03
Windows 2.04 2.04
Windows 2.1x
Windows 2.1 2.1 May 27, 1988 *Windows/286
  • Windows/386
  • Windows/486
Windows 2.11 2.11 March 13, 1989
Windows 3.0x
Windows 3.00 3.00 May 22, 1990 N/A
Windows 3.01 3.01 1991
Windows 3.1x
Windows 3.1 3.1 April 6, 1992 Janus N/A
Windows 3.11 3.11 November 8, 1993
Windows 3.2 3.2 November 22, 1993 Chinese version of Windows 3.1x
Windows for Workgroups
Windows for Workgroups 3.1 3.1 October 1992 Kato, Sparta N/A
Windows for Workgroups 3.11 3.11 August 11, 1993 Snowball N/A
Windows for Workgroups 3.2 3.2 December 1993 Cougar Chinese version of Windows for Workgroups 3.1x N/A
Windows 9x
Windows 95 4.0 August 24 ,1995 Chicago *Windows 95
  • Windows 95 SP1 (December 31, 1995)
  • Windows 95 OSR1 (February 14, 1996)
  • Windows 95 OSR2 (August 24, 1996)
  • Windows 95 USB Supplement to OSR2 (August 27, 1997)
  • Windows 95 OSR2.1 (August 27, 1997)
  • Windows 95 OSR2.5 (November 26, 1997)
Windows 96 4.1 May 3, 1996 Cleveland, Nashville N/A
Windows 98 4.2 June 21, 1998 Memphis *Windows 98 First Edition
  • Windows 98 Second Edition (April 23, 1999)
Windows Me 4.9 September 14, 2000 Millennium N/A
Windows NT
Windows NT 3.1 NT 3.1 July 27, 1993 NT OS/2 NT version of Windows 3.1 Windows NT 3.1 Workstation
Windows NT for Workgroups 3.1 1993 Razzle NT version of Windows for Workgroups 3.1 N/A
Windows 3.5 NT 3.5 September 21, 1994 Daytona Windows 3.5 Workstation
Windows 3.51 NT 3.51 May 30, 1995 Windows 3.51 Workstation
Windows NT 4.0 NT 4.0 August 24, 1996 Shell Update Release Windows NT 4.0 Workstation
Windows NT 5.0 NT 5.0 February 17, 2000 Memphis Windows NT 5.0 Workstation
Windows 2000 Windows 2000 Professional
Windows XP NT 5.1 October 25, 2001 Whistler *Windows XP Starter
  • Windows XP Home Basic
  • Windows XP Home Premium
  • Windows XP Professional
  • Windows XP 64-bit Edition
  • Windows Fundamentals for Legacy PCs (July 8, 2006)
Windows XP Professional x64 Edition NT 5.2 April 25, 2005 N/A N/A
Windows Vista NT 6.0 January 30, 2007 Longhorn *Windows Vista Starter
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Professional
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Ultimate
Windows 7 NT 6.1 October 22, 2009 Blackcomb, Vienna, Seven *Windows 7 Starter
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Enterprise
  • Windows 7 Ultimate
  • Windows Thin PC
Windows 7.1 NT 6.11 February 22, 2011 Chicago *Windows 7.1 Starter
  • Windows 7.1 Home Basic
  • Windows 7.1 Home Premium
  • Windows 7.1 Professional
  • Windows 7.1 Enterprise
  • Windows 7.1 Ultimate
  • Windows 7.1 Thin PC
Windows 8 NT 6.2 October 26, 2012 Jupiter, Eight *Windows 8
  • Windows 8 Professional
  • Windows 8 Enterprise
  • Windows 8 OEM
Windows 8.1 NT 6.3 October 17, 2013 Blue *Windows 8.1
  • Windows 8.1 Professional
  • Windows 8.1 Enterprise
  • Windows 8.1 OEM
  • Windows 8.1 with Bing
Windows 10 NT 10.0 2015 Threshold *Windows 10 Home Edition
  • Windows 10 Professional
  • Windows 10 Professional Education
  • Windows 10 Professional for Workstations
  • Windows 10 Enterprise
  • Windows 10 Enterprise LTSC (formerly LTSB)
  • Windows 10 Education
  • Windows 10 IoT Core
  • Windows 10 IoT Enterprise
  • Windows 10 S (now an operational mode within Enterprise and Education)

Server versions

Name Version Release date Codename Additional information Editions
Windows NT 3.1 NT 3.1 July 27, 1993 NT OS/2 NT version of Windows 3.1 *Windows NT 3.1 Server
  • Windows NT 3.1 Advanced Server
Windows 3.5 NT 3.5 September 20, 1994 Daytona Windows 3.5 Server
Windows 3.51 NT 3.51 May 29, 1995 Windows 3.51 Server
Windows NT 4.0 NT 4.0 July 29, 1996 Shell Update Release *Windows NT 4.0 Server
  • Windows NT 4.0 Enterprise Server
  • Windows NT 4.0 Terminal Server
Windows NT 5.0 NT 5.0 February 17, 2000 Memphis *Windows NT 5.0 Server
  • Windows NT 5.0 Advanced Server
  • Windows NT 5.0 Datacenter Server
Windows Server 2000 Memphis Server, Server 5 *Windows Server 2000
  • Windows Advanced Server 2000
  • Windows Datacenter Server 2000
Windows Server 2003 NT 5.2 April 24, 2003 Whistler Server *Windows Standard Server 2003
  • Windows Enterprise Server 2003
  • Windows Datacenter Server 2003
  • Windows Web Server 2003
  • Windows Storage Server 2003
  • Windows Small Business Server 2003
Windows Server 2003 R2 December 6, 2005 Whistler Server R2 *Windows Standard Server 2003 R2
  • Windows Enterprise Server 2003 R2
  • Windows Datacenter Server 2003 R2
  • Windows Web Server 2003 R2
  • Windows Storage Server 2003 R2
  • Windows Small Business Server 2003 R2
  • Windows Compute Cluster Server 2003
  • Windows Home Server
Windows Server 2008 NT 6.0 February 27, 2008 Longhorn Server *Windows Standard Server 2008
  • Windows Enterprise Server 2008
  • Windows Datacenter Server 2008
  • Windows Server 2008 for Itanium-based Systems
  • Windows Foundation Server 2008
  • Windows Essential Business Server 2008
  • Windows HPC Server 2008
  • Windows Small Business Server 2008
  • Windows Storage Server 2008
  • Windows Web Server 2008
Windows Server 2008 R2 NT 6.1 October 22, 2009 Longhorn Server R2, Server 7 *Windows Foundation Server 2008 R2
  • Windows Standard Server 2008 R2
  • Windows Enterprise Server 2008 R2
  • Windows Datacenter Server 2008 R2
  • Windows Server 2008 R2 for Itanium-based Systems
  • Windows Web Server 2008 R2
  • Windows Storage Server 2008 R2
  • Windows HPC Server 2008 R2
  • Windows Small Business Server 2010
  • Windows Home Server 2010
  • Windows MultiPoint Server 2010
Windows Server 2008 R3 NT 6.11 October 22, 2011 Longhorn Server R3, Server 7.1 *Windows Foundation Server 2008 R3
  • Windows Standard Server 2008 R3
  • Windows Enterprise Server 2008 R3
  • Windows Datacenter Server 2008 R3
  • Windows Server 2008 R3 for Itanium-based Systems
  • Windows Web Server 2008 R3
  • Windows Storage Server 2008 R3
  • Windows HPC Server 2008 R3
  • Windows Small Business Server 2011
  • Windows MultiPoint Server 2011
  • Windows Home Server 2011
Windows Server 2012 NT 6.2 September 4, 2012 Server 8 *Windows Foundation Server 2012
  • Windows Essentials Server 2012
  • Windows Standard Server 2012
  • Windows Datacenter Server 2012
  • Windows MultiPoint Server 2012
Windows Server 2012 R2 NT 6.2 October 17, 2013 Server Blue, Server 8.1 *Windows Foundation Server 2012 R2
  • Windows Essentials Server 2012 R2
  • Windows Standard Server 2012 R2
  • Windows Datacenter Server 2012 R2
  • Windows MultiPoint Server 2012 R2
Windows Server 2016 NT 10.0 October 12, 2016 Threshold Server *Windows Essentials Server 2016
  • Windows Standard Server 2016
  • Windows Datacenter Server 2016
Windows Server 2019 November 13, 2018 Redstone Server *Windows Essentials Server 2019
  • Windows Standard Server 2019
  • Windows Datacenter Server 2019

Device versions

Appliances

Name Version Release date An edition of Additional information Sold with
Windows XP Media Center Edition NT 5.1/NT 5.2 2002, 2003, 2004, and 2005 Windows XP Home theater PCs, network attached storage (NAS) and set-top boxes
Windows XP Tablet PC Edition NT 5.1 November 2002 Microsoft Tablet PC
Windows RT NT 6.2 October 26, 2012 Windows 8 ARM-based tablet computers
Windows RT 8.1 NT 6.3 October 18, 2013 Windows 8.1

Mobile devices

Mobile devices include smartphones, handheld tablet computers, and personal digital assistants

  • Windows 10
    • Windows 10 Mobile
    • Windows 10 Mobile Enterprise
    • Windows 10 IoT Mobile Enterprise
  • Windows Phone
    • Windows Phone 8.1
    • Windows Phone 8
    • Windows Phone 7.8
    • Windows Phone 7.5
    • Windows Phone 7.1
    • Windows Phone 7
  • Windows Mobile
    • Windows Mobile 6.5
    • Windows Mobile 6.1
    • Windows Mobile 6.0
    • Windows Mobile 5.0
    • Windows Mobile 2003 Second Edition
    • Windows Mobile 2003
    • Pocket PC 2002
    • Pocket PC 2000

Embedded devices

  • Windows Embedded
    • Windows Embedded 8
    • Windows Embedded Automotive
    • Windows Embedded Industry
    • Windows XP Embedded
    • Windows NT 4.0 Embedded – Abbreviated NTe, it is an edition of Windows NT 4.0 that was aimed at computer-powered major appliances, vending machines, ATMs and other devices that cannot be considered computers per se. It is the same system as the standard Windows NT 4.0, but it comes packaged in a database of components and dependencies, from which a developer can choose individual components to build customized setup CDs and hard disk boot images. Windows NT 4.0 Embedded includes Service Pack 5. Before 1998, it used to be called Windows NT 4.1.
  • Windows Embedded Compact
    • Windows Embedded Compact 2013
    • Windows Embedded Compact 7
    • Windows Embedded CE 6.0 (2006)
    • Windows CE 5.0 (2005), with a version for smartphones and PDAs sold as Windows Mobile 5.0
    • Windows CE 4.2 (2004), with a version for smartphones and PDAs sold as Windows Mobile 2003 SE
    • Windows CE 4.1 (2003), with a version for smartphones and PDAs sold as Pocket PC 2003
    • Windows CE 4.0 (2002), with a version for smartphones and PDAs sold as Pocket PC 2002
    • Windows CE 3.0 (June 2000), with a version for smartphones and PDAs sold as Pocket PC 2000
    • Windows CE 2.12 (August 1999)
    • Windows CE 2.11 (October 1998)
    • Windows CE 2.1 (July 1998)
    • Windows CE 2.0 (September 1997)
    • Windows CE 1.0 (November 1996)

Canceled versions

  • Windows Odyssey – a version intended to be an update to the Microsoft Windows NT 5.x codebase. The teams working on Neptune and Odyssey combined to work on Windows XP.
  • Windows Mobile 7 or Photon - originally a successor of Windows Mobile, it had been scrapped for Windows Phone 7 with Metro UI.
  • Windows Neptune (December 27, 1999) – the first planned version of Microsoft Windows NT to have a consumer edition variant, based on the Windows 2000 codebase. A version was sent out to testers but was never released.
  • Windows NT 4.1 (1997) – former name of Windows NT 4.0 Embedded.
  • Windows Cairo (February 29, 1996) – a "true object-oriented OS", planned after Windows NT 4.0.