Windows

Current Windows Logo

Microsoft Windows is a family of operating systems developed by Microsoft.

Versions

Windows 1.x
Windows 2.x
Windows 3.x - Codename Janus (3.1) - Kato, Sparta (3.1 for Workgroups) - Snowball (3.11 for Workgroups)

Windows NT 3.1 - Codename NT OS/2
Windows NT 3.5 - Codename Daytona
Windows NT 3.51
Windows NT 4.0 - Codename Cairo
Windows 2000 (NT 5.0) - Codename MemphisNT
Windows Codename Neptune (NT 5.50) - not released
Windows Codename Odyssey - not released
Windows Codename Triton - not released
Windows XP (NT 5.1) (NT 5.2 x64) - Codename Whistler
Windows Embedded 2009
Windows Server 2003 (NT 5.2) - Codename Whistler Server / .NET Server
Windows Home Server - Codename Quattro
Windows Codename Longhorn (NT 6.0) - not released
Windows Vista (NT 6.0) - Codename Longhorn (Omega-13 reset - Codebase was reset from .NET Server RC code to Server 2003 SP1 RC code)
Windows Server 2008 (NT 6.0) - Codename Longhorn Server
Windows Small Business Server 2008 - Codename Cougar
Windows Essential Business Server 2008 - Codename Centro
Windows 7 (NT 6.1) - Codename Blackcomb / Vienna / Seven
Windows Server 2008 R2 (NT 6.1) - Codename Server 7
Windows Embedded 7
Windows Multipoint Server
Windows Small Business Server 2011 Standard
Windows Home Server 2011
Windows Small Business Server 2011 Essentials
Windows 8 (NT 6.2)