List of Windows operating systems: Difference between revisions

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(windows 2000 is windows nt 4.9)
(readded windows 1.05 and 2.04, added windows 2.2, 2.21, 8.2, rt 8.2, and phone 8.2.)
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|1.00
|1.00
|November 6, 1985
|November 6, 1985
|rowspan="5"|Interface Manager
|rowspan="6"|Interface Manager
|First release of Windows
|First release of Windows
|rowspan="5"|
|rowspan="5"|
*Windows/286
*Windows/286
*Windows/386
*Windows/386
|rowspan="5"|N/A
|rowspan="6"|N/A
|rowspan="5"|December 31, 2001
|rowspan="6"|December 31, 2001
|-
|-
|Windows 1.01
|Windows 1.01
Line 44: Line 44:
|April 10, 1987
|April 10, 1987
|
|
|-
|Windows 1.05
|1.05
|1987
|An updated Chinese version of Windows 1.04
|-
|-
! colspan="8"|Windows 2.0x
! colspan="8"|Windows 2.0x
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|rowspan="4"|December 9, 1987
|rowspan="4"|December 9, 1987
|
|
|rowspan="4"|They doesn't work with Intel 80486 processors
|rowspan="5"|They doesn't work with Intel 80486 processors
|rowspan="4"|
|rowspan="5"|
*Windows/286
*Windows/286
*Windows/386
*Windows/386
|rowspan="4"|N/A
|rowspan="5"|N/A
|rowspan="4"|December 31, 2001
|rowspan="5"|December 31, 2001
|-
|-
|Windows 2.01
|Windows 2.01
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|2.03
|2.03
|
|
|-
|Windows 2.04
|2.04
|January 1988
|An updated Chinese version of Windows 2.03
|-
|-
! colspan="8"|Windows 2.1x
! colspan="8"|Windows 2.1x
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|
|
|
|
|rowspan="2"|
|rowspan="4"|
*Windows/286
*Windows/286
*Windows/386
*Windows/386
*Windows/486
*Windows/486
|rowspan="2"|N/A
|rowspan="4"|N/A
|rowspan="2"|December 31, 2001
|rowspan="4"|December 31, 2001
|-
|-
|Windows 2.11
|Windows 2.11
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|
|
|
|
|-
|Windows 2.2
|2.2
|rowspan="2"|1990
|
|A Chinese version of Windows 2.1
|-
|Windows 2.21
|2.21
|
|An updated version of Windows 2.2 or a Chinese version of Windows 2.11
|-
|-
! colspan="8"|Windows 3.0x
! colspan="8"|Windows 3.0x
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*Windows 7 Ultimate
*Windows 7 Ultimate
*Windows Thin PC
*Windows Thin PC
|7600.16905 (SP1)
|7600.16905 (Update)
|-
|-
|Windows 7.1
|Windows 7.1
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*Windows 7.1 Ultimate
*Windows 7.1 Ultimate
*Windows 7.1 Thin PC
*Windows 7.1 Thin PC
|7601.24387 (SP1)
|7601.24387 (Update)
|-
|-
|Windows 8
|Windows 8
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*Windows 8.11 OEM
*Windows 8.11 OEM
*Windows 8.11 with Bing
*Windows 8.11 with Bing
|9600.31213 (SP1 or Windows 8.2)
|9600.31213 (Chinese version)
|-
|-
|Windows 9
|Windows 9
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*Windows Home Server 2010
*Windows Home Server 2010
*Windows MultiPoint Server 2010
*Windows MultiPoint Server 2010
|7600.16905 (SP1)
|7600.16905 (Update)
|-
|-
|Windows Server 2008 R3
|Windows Server 2008 R3
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*Windows MultiPoint Server 2011
*Windows MultiPoint Server 2011
*Windows Home Server 2011
*Windows Home Server 2011
|7601.24387 (SP1)
|7601.24387 (Update)
|-
|-
|Windows Server 2012
|Windows Server 2012
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*Windows Datacenter Server 2012 R3
*Windows Datacenter Server 2012 R3
*Windows MultiPoint Server 2012 R3
*Windows MultiPoint Server 2012 R3
|9600.31213 (SP1 or Windows Server 2012 R3.1)
|9600.31213 (Chinese version)
|-
|-
|Windows Server 2014
|Windows Server 2014
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|-
|-
|Windows RT 8.1
|Windows RT 8.1
|rowspan="2"|NT 6.3
|rowspan="3"|NT 6.3
|October 18, 2013
|October 18, 2013
|RT Blue
|RT Blue
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|Windows 8.11
|Windows 8.11
|
|
|-
|Windows RT 8.2
|2014
|
|Windows 8.2
|A Chinese version of Windows RT 8.2
|}
|}


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*Windows 9 Mobile Enterprise
*Windows 9 Mobile Enterprise
*Windows Phone
*Windows Phone
*Windows Phone 8.11
**Windows Phone 8.2
**Windows Phone 8.11
**Windows Phone 8.1
**Windows Phone 8.1
**Windows Phone 8
**Windows Phone 8
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*Windows 4.2 (1998) – former name of Windows 98.
*Windows 4.2 (1998) – former name of Windows 98.
*Windows 4.9 and Windows 4.99 (2000) – former names of Windows Me.
*Windows 4.9 and Windows 4.99 (2000) – former names of Windows Me.
*Windows 5 (1999) – former names of Windows 2000.
*Windows 5 (1999) – former name of Windows 2000.
*Windows 2000 Server (1999) - former name of Windows Server 2000.
*Windows 2000 Server (1999) - former name of Windows Server 2000.
*Windows 2001 (2001), Windows 101 (2001), Windows 5.1 (2001), Windows NT XP (2001), and Windows NT 5.1 (2001) – former names of Windows XP.
*Windows 2001 (2001), Windows 101 (2001), Windows 5.1 (2001), Windows NT XP (2001), and Windows NT 5.1 (2001) – former names of Windows XP.
*Windows 6 (2006) – former name of Windows Vista.
*Windows 6 (2006) – former name of Windows Vista.
*Windows 8.2 (2014) – former name of Windows 9.
*Windows 9.1 (2015) – former name of Windows 10.
*Windows 9.1 (2015) – former name of Windows 10.
*Windows 10 20H1 (2020) – former name of Windows 2020.
*Windows 10 20H1 (2020) – former name of Windows 2020.
*Windows Server 20H1 (2020) and Windows 2020 Server (2020) – former names of Windows Server 2020.
*Windows Server 20H1 (2020) and Windows 2020 Server (2020) – former names of Windows Server 2020.

Revision as of 10:23, 6 October 2019

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 Latest build Unsupported as of
Windows 1.0x
Windows 1.00 1.00 November 6, 1985 Interface Manager First release of Windows
  • Windows/286
  • Windows/386
 N/A December 31, 2001
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 1987 An updated Chinese version of Windows 1.04
Windows 2.0x
Windows 2.00 2.00 December 9, 1987 They doesn't work with Intel 80486 processors
  • Windows/286
  • Windows/386
 N/A December 31, 2001
Windows 2.01 2.01
Windows 2.02 2.02
Windows 2.03 2.03
Windows 2.04 2.04 January 1988 An updated Chinese version of Windows 2.03
Windows 2.1x
Windows 2.1 2.1 May 27, 1988
  • Windows/286
  • Windows/386
  • Windows/486
 N/A December 31, 2001
Windows 2.11 2.11 March 13, 1989
Windows 2.2 2.2 1990 A Chinese version of Windows 2.1
Windows 2.21 2.21 An updated version of Windows 2.2 or a Chinese version of Windows 2.11
Windows 3.0x
Windows 3.00 3.00 May 22, 1990 Like Windows 2.1x, Windows 3.0x does work with Intel 80486 processors N/A N/A December 31, 2001
Windows 3.01 3.01 October 20, 1991 Sometimes called Windows Graphical Environment with Multimedia Extensions 1.0
Windows 3.1x
Windows 3.1 3.1 April 6, 1992 Janus N/A 103 December 31, 2001
Windows for Workgroups 3.1 3.1 October 1992 Kato, Sparta
Windows 3.11 3.11 November 8, 1993 Janus 300
Windows for Workgroups 3.11 3.11 August 11, 1993 Snowball
Windows 3.2 3.2 November 22, 1993 Janus Chinese version of Windows 3.1x 153
Windows for Workgroups 3.2 3.2 December 1993 Cougar Chinese version of Windows for Workgroups 3.1x
Windows 9x
Windows 95 4.0 August 24, 1995 Chicago
  • Windows 95
  • Windows 95 Service Pack 1 (December 31, 1995)
  • Windows 95 Service Pack 1.1 (February 14, 1996)
  • Windows 95 Service Pack 2 (August 24, 1996)
  • Windows 95 USB Supplement to Service Pack 2 (August 27, 1997)
  • Windows 95 Service Pack 2.1 (August 27, 1997)
  • Windows 95 Service Pack 2.5 (November 26, 1997)
 950 December 31, 2001
Windows 96 4.1 May 3, 1996 Cleveland, Nashville
  • Windows 96
  • Windows 96 Service Pack 1 (1997)
 1265 (RTM), 1326 (SP1)
Windows 97 June 24, 1997 ChiCairo N/A 1538 December 31, 2004
Windows 98 4.2 June 21, 1998 Memphis In winver, it incorrectly says 4.10, like Windows 96. N/A 1998 July 11, 2006
Windows 99 April 23, 1999 Dolly Also known as Windows 98 Second Edition. N/A 2222A
Windows Me 4.99 September 14, 2000 Millennium N/A 3000
Windows NT
Windows NT 3.1 NT 3.1 July 27, 1993 AXP NT version of Windows 3.1
  • Windows NT 3.1 Workstation
 511 (SP1) December 31, 2001
Windows NT for Workgroups 3.1 Razzle NT version of Windows for Workgroups 3.1 N/A 5xx
Windows NT 3.11 NT 3.11 1994 NT OS/2 NT version of Windows 3.11.
  • Windows NT 3.11 Workstation
 528 (SP1)
Windows NT for Workgroups 3.11 1994 Razzle NT version of Windows for Workgroups 3.11. N/A 5xx
Windows NT 3.2 NT 3.2 1994 NT 3.2 NT version of Windows 3.2 or Chinese version of Windows NT 3.11.
  • Windows NT 3.2 Workstation
 5xx
Windows 3.5 NT 3.5 September 21, 1994 Daytona
  • Windows 3.5 Workstation
 807
Windows 3.51 NT 3.51 May 30, 1995
  • Windows 3.51 Workstation
 1057.6 (SP5)
Windows NT 4.0 NT 4.0 August 24, 1996 Shell Update Release, NT 96
  • Windows NT 4.0 Workstation
 1381.7097 (SP7) December 3, 2004
Windows NT 5.0 NT 5.0 February 17, 2000 NT 5.0
  • Windows NT 5.0 Workstation
 2195.7397 (SP5) July 13, 2010
Windows 2000 NT 4.9 Memphis
  • Windows 2000 Professional
Windows XP NT 5.1 October 25, 2001 Whistler
  • Windows XP Starter
  • Windows XP Home
  • Windows XP Professional
  • Windows XP 64-bit Edition
  • Windows Fundamentals for Legacy PCs (July 8, 2006)
 2600.7259 (SP4) April 8, 2014
Windows XP Professional x64 Edition NT 5.2 April 25, 2005 Sundown N/A 3790.xxxx (SP3)
Windows Longhorn NT 6.0 April 1, 2005 Longhorn A beta version of Windows Vista.
  • Windows Longhorn Professional
 5048 July 14, 2015
Windows Vista January 30, 2007 Six
  • Windows Vista Starter
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Ultimate
 6003.20597 (SP3) April 11, 2017
Windows Vienna NT 6.1 December 12, 2008 Blackcomb, Vienna A beta version of Windows 7.
  • Windows Vienna Starter
  • Windows Vienna Home Basic
  • Windows Vienna Home Premium
  • Windows Vienna Business
  • Windows Vienna Enterprise
  • Windows Vienna Ultimate
 7000 January 14, 2020
Windows 7 October 22, 2009 Seven
  • Windows 7 Starter
  • Windows 7 Home Basic
  • Windows 7 Home Premium
  • Windows 7 Professional
  • Windows 7 Enterprise
  • Windows 7 Ultimate
  • Windows Thin PC
 7600.16905 (Update)
Windows 7.1 NT 6.11 February 22, 2011 7.1
  • 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
 7601.24387 (Update)
Windows 8 NT 6.2 October 26, 2012 Jupiter, Eight
  • Windows 8
  • Windows 8 Pro
  • Windows 8 Home
  • Windows 8 Enterprise
  • Windows 8 Core
  • Windows 8 OEM
 9200 January 10, 2023
Windows 8.1 NT 6.3 October 17, 2013 Blue
  • Windows 8.1
  • Windows 8.1 Pro
  • Windows 8.1 Home
  • Windows 8.1 Enterprise
  • Windows 8.1 Core
  • Windows 8.1 OEM
  • Windows 8.1 with Bing
 9600.16384
Windows 8.11 April 8, 2014 8.1 Update 1 An updated version of Windows 8.1.
  • Windows 8.11
  • Windows 8.11 Pro
  • Windows 8.11 Home
  • Windows 8.11 Enterprise
  • Windows 8.11 Core
  • Windows 8.11 OEM
  • Windows 8.11 with Bing
 9600.31213 (Chinese version)
Windows 9 NT 6.4 September 12, 2014 Technical Preview
  • Windows 9
  • Windows 9 Pro
  • Windows 9 Home
  • Windows 9 Enterprise
  • Windows 9 Core
 9841 2024 or 2025
Windows 10 NT 10.0 July 29, 2015 (1507)
November 10, 2015 (1511)
August 2, 2016 (1607)
April 5, 2017 (1703)
October 17, 2017 (1709)
April 30, 2018 (1803)
November 13, 2018 (1809)
May 21, 2019 (1903) 		Threshold (1507)
Threshold 2 (1511)
Redstone (1607)
Redstone 2 (1709)
Redstone 3 (1709)
Redstone 4 (1803)
Redstone 5 (1809)
19H1 (1903)
19H2 (1909) 		Also known as Windows X
  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Pro Education
  • Windows 10 Pro 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)
 10240 (1507)
10586 (1511)
14393 (1607)
15063 (1703)
16299 (1709)
17134 (1803)
17763 (1809)
18362.116 (1903) 		October 14, 2025
Windows 2020 2020 20H1 A successor to Windows 10 19H2. Not yet finished.
  • Windows 2020 Home
  • Windows 2020 Pro
  • Windows 2020 Pro Education
  • Windows 2020 Pro for Workstations
  • Windows 2020 Enterprise
  • Windows 2020 Enterprise LTSC
  • Windows 2020 Education
  • Windows 2020 IoT Core
  • Windows 2020 IoT Enterprise
  • Windows 2020 S
 Not yet released Not yet released

Server versions

Name Version Release date Codename Additional information Editions Latest build Unsupported as of
Windows NT 3.1 NT 3.1 July 27, 1993 AXP NT version of Windows 3.1
  • Windows NT 3.1 Server
  • Windows NT 3.1 Advanced Server
 511 (SP1) December 31, 2001
Windows NT 3.11 NT 3.11 1994 NT OS/2 NT version of Windows 3.11
  • Windows NT 3.11 Server
  • Windows NT 3.11 Advanced Server
 528 (SP1)
Windows NT 3.2 NT 3.2 1994 NT 3.2 NT version of Windows 3.2 or Chinese version of Windows NT 3.11
  • Windows NT 3.2 Server
  • Windows NT 3.2 Advanced Server
 5xx
Windows 3.5 NT 3.5 September 20, 1994 Daytona
  • Windows 3.5 Server
 807
Windows 3.51 NT 3.51 May 29, 1995
  • Windows 3.51 Server
 1057.6 (SP5)
Windows NT 4.0 NT 4.0 July 29, 1996 Shell Update Release, NT 96
  • Windows NT 4.0 Server
  • Windows NT 4.0 Enterprise Server
  • Windows NT 4.0 Terminal Server
 1381.7097 (SP7) December 3, 2004
Windows NT 5.0 NT 5.0 February 17, 2000 NT 5.0
  • Windows NT 5.0 Server
  • Windows NT 5.0 Advanced Server
  • Windows NT 5.0 Datacenter Server
 2195.7397 (SP5) July 13, 2010
Windows Server 2000 NT 4.9 Memphis A server counterpart of Windows 2000
  • Windows Server 2000
  • Windows Advanced Server 2000
  • Windows Datacenter Server 2000
Windows Server 2003 NT 5.2 April 24, 2003 Whistler Server A server counterpart of Windows XP.
  • 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
 3790.xxxx (SP3) July 14, 2015
Windows Server 2003 R2 NT 6.0 December 6, 2005 Longhorn Server A server counterpart of Windows Longhorn.
  • 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
 5048
Windows Server 2007 January 30, 2007 Server 6, Vista Server A server counterpart of Windows Vista.
  • Windows Standard Server 2007
  • Windows Enterprise Server 2007
  • Windows Datacenter Server 2007
  • Windows Server 2007 for Itanium-based Systems
  • Windows Foundation Server 2007
  • Windows Essential Business Server 2007
  • Windows HPC Server 2007
  • Windows Small Business Server 2007
  • Windows Storage Server 2007
  • Windows Web Server 2007
  • Windows Home Server
 6003.20597 (SP3) April 11, 2017
Windows Server 2008 NT 6.1 December 12, 2008 Vienna Server A server counterpart of Windows Vienna.
  • 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
 7000 January 14, 2020
Windows Server 2008 R2 October 22, 2009 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
 7600.16905 (Update)
Windows Server 2008 R3 NT 6.11 October 22, 2011 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
 7601.24387 (Update)
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
 9200 October 10, 2023
Windows Server 2012 R2 NT 6.3 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
 9600.16384
Windows Server 2012 R3 April 8, 2014 Server 8.11 An updated version of Windows Server 2012 R2.
  • Windows Foundation Server 2012 R3
  • Windows Essentials Server 2012 R3
  • Windows Standard Server 2012 R3
  • Windows Datacenter Server 2012 R3
  • Windows MultiPoint Server 2012 R3
 9600.31213 (Chinese version)
Windows Server 2014 NT 6.4 September 12, 2014 Server 9
  • Windows Essentials Server 2014
  • Windows Standard Server 2014
  • Windows Datacenter Server 2014
 9841 2024 or 2025
Windows Server 2016 NT 10.0 October 12, 2016 Threshold Server
  • Windows Essentials Server 2016
  • Windows Standard Server 2016
  • Windows Datacenter Server 2016
 10586 January 12, 2027
Windows Server 2019 May 21, 2019 Server 19H1
  • Windows Essentials Server 2019
  • Windows Standard Server 2019
  • Windows Datacenter Server 2019
 18362.116 January 9, 2029
Windows Server 2020 2020 Server 20H1 A successor to Windows Server 19H2. Not yet finished.
  • Windows Essentials Server 2020
  • Windows Standard Server 2020
  • Windows Datacenter Server 2020
 Not yet released Not yet released

Device versions

Appliances

Name Version Release date Codename An edition of Additional information Sold with
Windows XP Media Center Edition NT 5.1/NT 5.2 2001, 2002, 2003, 2004, 2005, and 2006 Trident (2001)
eHome (2002)
Freestyle (2003)
Harmony (2004)
Symphony (2005)
Emerald (2006) 		Windows XP Home theater PCs, network attached storage (NAS) and set-top boxes
Windows XP Tablet PC Edition November 2002, 2003, 2004, and 2005 Mira (2002) Microsoft Tablet PC
Windows RT NT 6.2 October 26, 2012 Windows on ARM Windows 8 ARM-based tablet computers
Windows RT 8.1 NT 6.3 October 18, 2013 RT Blue Windows 8.1
Windows RT 8.11 April 8, 2014 RT 8.1 Update 1 Windows 8.11
Windows RT 8.2 2014 Windows 8.2 A Chinese version of Windows RT 8.2

Mobile devices

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

  • Windows 2020
    • Windows 2020 Mobile
    • Windows 2020 Mobile Enterprise
    • Windows 2020 IoT Mobile
    • Windows 2020 IoT Mobile Enterprise
  • Windows 10
    • Windows 10 Mobile
    • Windows 10 Mobile Enterprise
    • Windows 10 IoT Mobile
    • Windows 10 IoT Mobile Enterprise
  • Windows 9
  • Windows 9 Mobile
  • Windows 9 Mobile Enterprise
  • Windows Phone
    • Windows Phone 8.2
    • Windows Phone 8.11
    • 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 5.1
    • Windows Mobile 5.0
    • Windows Mobile 2003 Third Edition
    • Windows Mobile 2003 Second Edition
    • Windows Mobile 2003
    • Pocket PC 2002
    • Pocket PC 2001
    • Pocket PC 2000

Embedded devices

  • Windows Embedded
    • Windows Embedded 9
    • Windows Embedded 8.11
    • Windows Embedded 8.1
    • Windows Embedded 8
    • Windows Embedded 7.1
    • Windows Embedded 7
    • Windows Embedded Automotive
    • Windows Embedded Industry
    • Windows Embedded 2009
    • 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 7.1
    • Windows Embedded Compact 7
    • Windows Embedded CE 6.1 (2007)
    • Windows Embedded CE 6.0 (2006)
    • Windows CE 5.1 (2006), with a version for smartphones and PDAs sold as Windows Mobile 5.1
    • Windows CE 5.0 (2005), with a version for smartphones and PDAs sold as Windows Mobile 5.0
    • Windows CE 4.3 (2005), with a version for smartphones and PDAs sold as Windows Mobile 2003 TE
    • 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 Windows Mobile 2003
    • Windows CE 4.0 (2002), with a version for smartphones and PDAs sold as Pocket PC 2002
    • Windows CE 3.1 (2001), with a version for smartphones and PDAs sold as Pocket PC 2001
    • Windows CE 3.0 (June 2000), with a version for smartphones and PDAs sold as Pocket PC 2000
    • Windows CE 2.13 (January 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

  • Microsoft 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.
  • Microsoft 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.
  • Microsoft Triton (2001) – a planned successor to Microsoft Neptune.
  • Windows NT 4.1 (1997) – former name of Windows NT 4.0 Embedded.
  • Microsoft Cairo (February 29, 1996) – a "true object-oriented OS", planned after Windows NT 4.0.
  • Microsoft Midori (2003) – codename for a managed code operating system.
  • Windows 0.x (1983) – also known as Windows Interface Manager Internal Test Release 3.
  • Windows 4.0 (1995) – former name of Windows 95.
  • Windows 4.1 (1996) – former name of Windows 96.
  • Windows 4.2 (1998) – former name of Windows 98.
  • Windows 4.9 and Windows 4.99 (2000) – former names of Windows Me.
  • Windows 5 (1999) – former name of Windows 2000.
  • Windows 2000 Server (1999) - former name of Windows Server 2000.
  • Windows 2001 (2001), Windows 101 (2001), Windows 5.1 (2001), Windows NT XP (2001), and Windows NT 5.1 (2001) – former names of Windows XP.
  • Windows 6 (2006) – former name of Windows Vista.
  • Windows 9.1 (2015) – former name of Windows 10.
  • Windows 10 20H1 (2020) – former name of Windows 2020.
  • Windows Server 20H1 (2020) and Windows 2020 Server (2020) – former names of Windows Server 2020.
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