Each Microsoft Windows operating system has a familiar name, like Windows 10 or Windows Vista, but behind each common name is an actual Windows version number.
Client versions
| Name | Release Date | Release Version | Editions | Latest build |
| Windows 10 | 29-Jul-15 | NT 10.0[1] | Windows 10 Home | 14393 |
| Windows 10 Pro | (August 2 update) | |||
| Windows 10 Pro Education | ||||
| Windows 10 Enterprise | ||||
| Windows 10 Enterprise LTSB | ||||
| Windows 10 Education | ||||
| Windows 10 Mobile | ||||
| Windows 10 Mobile Enterprise | ||||
| Windows 10 IoT Core | ||||
| Windows 10 IoT Enterprise | ||||
| Windows 10 IoT Mobile Enterprise | ||||
| See Windows 10 editions | ||||
| Windows 8.1 | 17-Oct-13 | NT 6.3 | Windows 8.1 | 9600 |
| Windows 8.1 Pro | (April 8 update) | |||
| Windows 8.1 Enterprise | ||||
| Windows 8 | 26-Oct-12 | NT 6.2 | Windows 8 | 9200 |
| Windows 8 Pro | ||||
| Windows 8 Enterprise | ||||
| Windows 8 OEM | ||||
| See Windows 8 editions | ||||
| Windows 7 | 22-Oct-09 | NT 6.1 | Windows 7 Starter | 7601 |
| Windows 7 Home Basic | (Service Pack 1) | |||
| Windows 7 Home Premium | ||||
| Windows 7 Professional | ||||
| Windows 7 Enterprise | ||||
| Windows 7 Ultimate | ||||
| Windows Thin PC | ||||
| See Windows 7 editions | ||||
| Windows Vista | 30-Jan-07 | NT 6.0 | Windows Vista Starter | 6002 |
| Windows Vista Home Basic | (Service Pack 2) | |||
| Windows Vista Home Premium | ||||
| Windows Vista Business | ||||
| Windows Vista Enterprise | ||||
| Windows Vista Ultimate | ||||
| See Windows Vista editions | ||||
| Windows XP Professional x64 | 25-Apr-05 | NT 5.2 | N/A | 3790 |
| (Service Pack 2) | ||||
| Windows XP | 25-Oct-01 | NT 5.1 | Windows XP Starter | 2600 |
| Windows XP Home | (Service Pack 3) | |||
| Windows XP Professional | ||||
| Windows XP 64-bit Edition | ||||
| Windows Fundamentals for Legacy PCs (8 July 2006) | ||||
| See Windows XP editions | ||||
| Windows ME | 14-Sep-00 | 4.9 | N/A | 3000 |
| Windows 2000 | 17-Feb-00 | NT 5.0 | Professional | 2195 |
| Windows 98 | 25-Jun-98 | 4.1 | Windows 98 | 2222 A |
| Windows 98 Second Edition (23 April 1999) | ||||
| Windows NT 4.0 | 24-Aug-96 | NT 4.0 | Windows NT 4.0 Workstation | 1381 |
| (Service Pack 6a) | ||||
| Windows 95 | 24-Aug-95 | 4 | Windows 95 | 950 |
| Windows 95 SP1 (31 December 1995) | ||||
| Windows 95 OSR1 (14 February 1996) | ||||
| Windows 95 OSR2 (24 August 1996) | ||||
| Windows 95 USB Supplement to OSR2 (27 August 1997) | ||||
| Windows 95 OSR2.1 (27 August 1997) | ||||
| Windows 95 OSR2.5 (26 November 1997) | ||||
| Windows NT 3.51 | 30-May-95 | NT 3.51 | Windows NT 3.51 Workstation | 1057 |
| Windows NT 3.5 | 21-Sep-94 | NT 3.50 | Windows NT 3.5 Workstation | 807 |
| Windows 3.2 | 22-Nov-93 | 3.2 | Simplified Chinese only | |
| Windows for Workgroups 3.11 | Nov-93 | 3.11 | N/A | |
| Windows NT 3.1 | 27-Jul-93 | NT 3.10 | Windows NT 3.1 | 528 |
| Windows 3.1 | Apr-92 | 3.1 | Windows 3.1 | |
| Windows for Workgroups 3.1 (October 1992) | ||||
| Windows 3.0 | 22-May-90 | 3 | N/A | |
| Windows 2.11 | 13-Mar-89 | 2.11 | Windows/286 | |
| Windows/386 | ||||
| Windows 2.10 | 27-May-88 | 2.1 | Windows/286 | |
| Windows/386 | ||||
| Windows 2.03 | 09-Dec-87 | 2.03 | N/A | |
| Windows 1.04 | Apr-87 | 1.04 | N/A | |
| Windows 1.03 | Aug-86 | 1.03 | N/A | |
| Windows 1.02 | May-86 | 1.02 | N/A | |
| Windows 1.01 | 20-Nov-85 | 1.01 | N/A |
Server versions
| Name | Release Date | Release version | Editions |
| Windows Server 2016 | 2016 | NT 10.0 | Windows Server 2016 Essentials |
| Windows Server 2016 Standard | |||
| Windows Server 2016 Datacenter | |||
| Windows Server 2012 R2 | 2013 | NT 6.3 | Windows Server 2012 R2 Foundation |
| Windows Server 2012 R2 Essentials | |||
| Windows Server 2012 R2 Standard | |||
| Windows Server 2012 R2 Datacenter | |||
| Windows Server 2012 | 2012 | NT 6.2 | Windows Server 2012 Foundation |
| Windows Server 2012 Essentials | |||
| Windows Server 2012 Standard | |||
| Windows Server 2012 Datacenter | |||
| Windows MultiPoint Server 2012 | |||
| Windows Server 2008 R2 | 2009 | NT 6.1 | Windows Server 2008 R2 Foundation |
| Windows Server 2008 R2 Standard | |||
| Windows Server 2008 R2 Enterprise | |||
| Windows Server 2008 R2 Datacenter | |||
| 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 2011 | |||
| Windows MultiPoint Server 2011 | |||
| Windows Home Server 2011 | |||
| Windows MultiPoint Server 2010 | |||
| Windows Server 2008 | 2008 | NT 6.0 | Windows Server 2008 Standard |
| Windows Server 2008 Enterprise | |||
| Windows Server 2008 Datacenter | |||
| Windows Server 2008 for Itanium-based Systems | |||
| Windows Server Foundation 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 2003 R2 | 2006 | NT 5.2 | Windows Small Business Server 2003 R2 |
| Windows Server 2003 R2 Web Edition | |||
| Windows Server 2003 R2 Standard Edition | |||
| Windows Server 2003 R2 Enterprise Edition | |||
| Windows Server 2003 R2 Datacenter Edition | |||
| Windows Compute Cluster Server 2003 (CCS) | |||
| Windows Storage Server | |||
| Windows Home Server | |||
| Windows Server 2003 | 2003 | NT 5.2 | Windows Small Business Server 2003 |
| Windows Server 2003 Web Edition | |||
| Windows Server 2003 Standard Edition | |||
| Windows Server 2003 Enterprise Edition | |||
| Windows Server 2003 Datacenter Edition | |||
| Windows Storage Server | |||
| Windows 2000 | 17-Feb-00 | NT 5.0 | Windows 2000 Server |
| Windows 2000 Advanced Server | |||
| Windows 2000 Datacenter Server | |||
| Windows NT 4.0 | 29-Jul-96 | NT 4.0 | Windows NT 4.0 Server |
| Windows NT 4.0 Server Enterprise | |||
| Windows NT 4.0 Terminal Server Edition | |||
| Windows NT 3.51 | Jun-95 | NT 3.51 | Windows NT 3.51 Server |
| Windows NT 3.5 | Sep-94 | NT 3.50 | Windows NT 3.5 Server |
| Windows NT 3.1 | Aug-93 | NT 3.10 | Windows NT 3.1 Advanced Server |
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