| Codename
|
Preliminary name
|
Final name
|
Notes
|
| NT OS/2/NT 3.2/AXP/June 93
|
OS/2 3.0
|
Windows NT 3.1
|
|
| Daytona
|
|
Windows 3.5x
|
|
| SUR (Shell Update Release)/Cairo, Cairo[1]
|
|
Windows NT 4.0
|
Microsoft originally planned for NT 4.0 to be just a simple "Shell Update Release" to integrate the Windows 95 GUI with Windows 3.51's kernel.
|
| Wolfpack
|
|
Microsoft Cluster Server
|
|
| Hydra
|
|
Terminal Services, Terminal Server
|
hydra is a mythological monster with multiple head (anatomy)|heads.
|
| Impala
|
|
Windows NT 4.0 Embedded
|
|
| Asteroid
|
Windows NT 5.0 Service Pack 1
|
Windows 2000 Service Pack 1
|
|
| Janus
|
Windows NT 5.0 64-bit
|
Windows 2000 64-bit
|
Same codename as Windows 3.1
|
| Odyssey
|
|
N/A
|
Ideas project, merged to Whistler.
|
| Neptune
|
|
N/A
|
Ideas project, merged to Whistler.
|
| Whistler
|
Windows 5.1, Windows 101, Windows 2001, Windows .NET 2001, Windows NT XP
|
Windows XP
|
Merge of Whistler build 2202, Neptune and Project Odyssey. Named after Whistler, British Columbia, where design retreats were held.
|
| Mantis
|
|
Windows XP Embedded
|
|
| eHome
|
|
Windows XP Media Center Edition
|
|
| Freestyle
|
|
Windows XP Media Center Edition 2003
|
Name of a terrain rating system in the Whistler-Blackcomb resort.
|
| Harmony
|
|
Windows XP Media Center Edition 2004
|
Name of a ski lift and alpine bowl in Whistler, British Columbia.
|
| Symphony
|
|
Windows XP Media Center Edition 2005
|
Name of an alpine bowl in Whistler, British Columbia.
|
| Emerald
|
|
Windows XP Media Center Edition 2005 Update Rollup 2
|
Name of a ski lift in Whistler, British Columbia.
|
| Trainyard
|
|
Windows XP Service Pack 1
|
Trainyard was an engineering package of driver updates to ship simultaneously with Windows XP Service Pack 1, the most major of which was support for USB 2.0 which was also ported backwards to Windows 2000.
|
| Springboard
|
|
Windows XP Service Pack 2
|
Name of a ski run on Blackcomb in Whistler, British Columbia.
|
| Lone Star
|
|
Windows XP Tablet PC Edition 2005
|
A branch of the Windows XP Professional Service Pack 2 codebase, featuring enhancements specifically for Tablet PC hardware.
|
| Whistler Server
|
Windows XP Server, Windows .NET Server, Windows Server 2002
|
Windows Server 2003
|
One of many unrelated Microsoft projects of the time to carry a ".NET" designation. See: Microsoft .NET.
|
| Bobcat
|
|
Windows Small Business Server 2003
|
Bobcat is a ski-run on Whistler Mountain.
|
| Eiger
|
|
Windows Fundamentals for Legacy PCs
|
Software Assurance program. The Eiger is a mountain in the Bernese Oberland in Switzerland. The Eiger is part of a trio of mountains, The Eiger, The Mönch and The Jungfrau.
|
| Mönch
|
|
Windows Mobile 6
|
VPN-s and advanced IP (Internet Protocol) security. The Mönch is a mountain in the Bernese Oberland in Switzerland. The Mönch is part of a trio of mountains, The Eiger, The Mönch and The Jungfrau.
|
| Longhorn
|
Windows 6
|
Windows Vista
|
Went gold (RTM) on 8 of November 2006. Named after the Longhorn Bar in the Whistler-Blackcomb resort; initially planned as an "interim release" between "Whistler" and "Blackcomb" (which was "Vienna" and is now Windows 7).
|
| Cougar
|
Windows Longhorn Small Business Server
|
Windows Small Business Server 2008
|
Same codename as Windows for Workgroups 3.2. Cougar is a ski-run on Whistler Mountain.
|
| Longhorn Server
|
|
Windows Server 2008
|
In development. Planned server equivalent of Windows Vista to be released in 2008.
|
| Longhorn Server R2, Server 7
|
|
Windows Server 2008 R2
|
In development. Planned "mid-size" (25-500 PC) edition of Longhorn Server.[2].
|
| Blackcomb, Vienna, Seven
|
|
Windows 7
|
Originally codenamed "Blackcomb" after the Whistler-Blackcomb resort. Renamed to "Vienna" in January 2006.
|
| Q, Quattro
|
|
Windows Home Server
|
Announced at CES 2007. Original project codename was "Quattro" because it was the leader of the project's 4th attempt at building a home server at Microsoft. Renamed to Q once the project moved out of incubation stage.
|
| Chicago NT (Windows 7.1 Pre-Release)
|
|
Windows 7.1
|
Same codename as Windows 95
|
| Longhorn Server R3, Server 7.1
|
|
Windows Server 2008 R3
|
|
| Eight
|
|
Windows 8
|
|
| Metro
|
|
Windows 8 Style UI
|
Renamed from Metro because of a lawsuit with the German Metro company
|
| Blue
|
|
Windows 8.1
|
|
| Threshold
|
|
Windows 10
|
|
| Redstone
|
|
Windows 10 (2016)
|
Redstone is a mineral and item in Minecraft, a game product by Mojang and Microsoft bought it in 2015
|