Codename
Updated: 09/12/2023 by Computer Hope
A codename is a name given to a product while it's in development and does not officially have a name. For example, "Chicago" was the codename given to Microsoft Windows 95 while it was being developed.
Should I use "codename," "code-named," or "codenamed" in my writing?
When the word is used as a noun, use "codename." Use "code-named" with a hyphen in your writing when used as a verb.
Microsoft codenames
Below is a listing of codenames and related Microsoft products.
Note
Some Microsoft products mentioned below have multiple codenames for each version of the product mentioned. The codenames shown below are for the original versions of the product.
| Product | Codename |
|---|---|
| Bob | Utopia |
| MS-DOS 6.0 | Astro |
| MS-DOS 7.0 | Jaguar |
| Windows 3.1 | Sparta |
| Windows for Workgroups 3.1 | Winball |
| Windows for Workgroups 3.11 | Snowball |
| Windows 95 | Chicago |
| Windows 95B (OSR2) | Detroit |
| Windows 98 | Memphis |
| Windows CE | Pegasus |
| Windows Me | Millennium |
| Windows NT 3.5 | Daytona |
| Windows NT 4.0 | Cairo |
| Windows Phone 7.5 | Mango |
| Microsoft Excel | Odyssey |
| Windows 2000 | Janus |
| Windows XP (ver 5.1.2600) | Whistler |
| Windows Server 2003 | Whistler Server |
| Windows Vista | Longhorn |
| Windows Vista's new command interface. | Monad |
| Windows product never released. | Neptune |
| Windows 7 | Vienna and Blackcomb |
| Windows 8 | Midori |
| Windows 10 | Threshold |
| Windows 11 | Sun Valley |
| Next unnamed Windows | Hudson Valley |