- Various Microsoft product codenames from over the years.
| Avalon | Windows Presentation Foundation, WPF is the presentation subsystem class libraries in WinFX. |
| Aero | UI in Windows Vista |
| Aruba | Windows Media Platform for Blackcomb |
| Ajax | New Set of asynchonous technologies for web applications enabling richer user experiences |
| Blackcomb | Successor to Vista |
| Cairo | Base collection of technologies which largely evolved into the core technologies in 1.Vista. |
| Cider | VS Designer for Windows Presentation Foundation |
| Longhorn | Windows Vista |
| Monad | Longorn Command Shell. Msh is the new |
| Vienna | Office Live Communication Server 2005 |
| Whidbey | Visual Studio .NET 2005 |
| Orcas | Visual Studio 2008 |
| Hawaii | Future version of Visual Studio (after the Orcas release). |
| Whitehorse | VS.NET 2005 Design Tool Suite |
| WinFx | The set of next-generation managed APIs provided by Microsoft |
| Yukon | SQL Server 2005 scripting and automation environment for Windows |
| Acrylic | Microsoft Expression Graphic Designer. A new professional graphics software. |
| Sparkle | Microsoft Expression Interactive Designer. |
| Quartz | Microsoft Expression Web Designer. |
| WinFS | Next-generation Unified Storage Sub-system for Windows. |
| Avalon | Windows Presentation Foundation, WPF is the presentation subsystem class libraries in WinFX. |
| Asteroid | Windows 2000 SP1 |
| Aero | UI in Windows Vista |
| Bearpaw | Windows Terminal Services for Windows Server 2003 |
| Blackcomb | Is the server version of Vista |
| Bobcat | Windows Server 2003 Small Business Edition |
| Cairo | Base collection of technologies which largely evolved into the core technologies in Vista. |
| Chicago | Windows 95 |
| Daytona | Windows NT 3.5 |
| Detroit | Windows 95 OSR 2 |
| Freestyle | Windows XP Media Center Edition |
| Frosting | Windows 95 Plus! |
| Harmony | Windows XP Media Center Edition 2004 |
| Impala | Windows NT4 Embedded |
| Indigo | Communications services used in Vista, also called WCF(Windows Communication Foundation) |
| Janus | Windows 3.1 |
| Lonestar | Windows XP Tablet PC Edition 2005 |
| Longhorn | Windows Vista |
| Mantis | Windows XP Embedded 5.1 |
| Memphis | Windows 98 |
| Mesquite | Batch Management tools for Windows NT/Windows 2000 Server |
| Millenium/Georgia | Windows ME |
| Mir | Internal Mercury release |
| NAS 3.0 | Windows Storage Server 2003 |
| Nashville | Internet Explorer 4, for Windows 95 |
| Neptune | Cancelled successor to Windows 98 |
| Newshell | Alpha shell update for Windows NT 3.x |
| Panther | Abandoned port of Windows NT, replaced by Chicago |
| Slalom | Windows Media Center for Vista |
| Sparta | Windows for Workgroups 3.1 |
| Springboard | Backporting of Vista technologies to Windows XP SP2 |
| Snowball | Windows for Workgroups 3.11 |
| Sundown | Windows XP 64-bit |
| SUR | Patch to Windows 3.51 |
| Symphony | Windows XP Media Center Edition 2005 |
| Whistler | Windows XP |
| Windows | Windows 1.0 |
| Windows 286 | Windows 2.0 |
| WinFx | The set of next-generation managed APIs provided by Microsoft |
| Alder | Windows CE 2.1 |
| Apolllo | Windows CE for Auto PC |
| Axe | Embedded Toolkit for Windows CE 2.0 and 2.1 |
| Brich | Windows CE 2.11 and 2.12 |
| Cedar | Windows CE 3.0 |
| Chainsaw | Windows CE Platform Builder 3.0 |
| Galileo | Windows CE for Handheld PC 2000 |
| Goldeneye | Windows CE for AutoPC |
| Gryphon | Windows CE 2.0 for palm-sized PCs |
| Hai Ku | Multimedia Extension for Windows |
| Hermes | Windows CE for webphones |
| Jameson | Windows CE.NET Update |
| Jupiter | Windows CE for Handheld PC Pro 3.0 (or Macallan Windows CE.NET Corporate Edition??) |
| Laguna | Upcoming version of SQL Server, for Windows CE |
| McKendrick | Windows CE for Media2G0 |
| Mercury | Windows CE for Hanheld PC |
| Merlin | Pocket PC 2002 (or Windows CE 2002??) |
| Mira | Windows CE for Smart Display Devices |
| Orion | Windows CE for Chinese Handheld PC |
| Ozone | Pocket PC 2003 |
| Pegasus | Windows CE 1.0 |
| Rapier | Windows CE for PocketPC 2000 |
| Stinger | Smartphone 2002 (or Windows CE for Smartphones 1.0??) |
| Starlite | .NET Compact Framework 1.0 |
| Talisker | Windows CE .NET |
| Tazz | Microsoft Phone |
| Visine | Novell Netware Migration Tool |
| Venus | Windows CE for webTV |
| Wyvern | Windows CE for Color Palm PC |
| Springboard | Microsoft's security excellence and review project, who's fruits were deployed via Office 2003 SP1, Windows XP SP1 and Windows Server 2003 SP1 |
| Palladium | An on-again off-again secure runtime environment called Next Generation Secure Computing Base (NGSCB |
| AirStream | Services for wireless connections to Exchange |
| Avalanche | Internet-Information-Services 5.0 |
| Argo | Query-Services for SQL-Server 2000 |
| Aruba | Windows Media Platform for Blackcomb |
| Athena | Outlook Express |
| Athens | New prototype PC design (with HP) |
| Blackbird | MSN SDK |
| Blizzard | Business oriented Set of Services in .NET My Services |
| Basecamp | VPN dial-up networking update (PPTP) for win95 |
| Calais | Smart-Card Technologies |
| Cascade | Windows Active-Directory |
| Cayman | NetMeeting 3.0 Version 3.01 4.4.3400 |
| Chrome | ChromeEffects (GUI-Feature) |
| Cirrus | Access 1.0 |
| Comet | Network-Tools for Windows 2000 |
| Corona | Windows Media-Technologies 9.0 |
| Coyote | Distributed Views for SQL-Server 2000 |
| Darwin | Windows Installer 1.1 Version 1.1 |
| Dart | Setup for Oracle, SQL-Server ODBC-driver |
| DaVinci | Database-Design & Query-Tools |
| Denali | Active Server Pages |
| Europa | New GUI for the MSN-Community |
| Fahrenheit | A defunct collaboration between Microsoft & SGI Graphics to combine Direct3D and OpenGL by creating a unified 3D API. -Direct X Version 10.0- |
| Falcon | Windows Messaging Queuing Server |
| Fusion | Technologies for DLL improvements |
| Gemini | Succesor GUI "Europa" for MSN-Community |
| Gibraltar | Internet-Information-Server 1.0 Version 3.0 |
| Grizzly | Workflow-Designer for SQL-Server 2000 |
| Hailstorm | XML Message Interface |
| Hailstorm | .NET My Services |
| HardeningPack | Internet Explorer Enhanced Security (Windows Server 2003) |
| Hydra | Windows NT Terminal Services |
| Idaho | Preliminary/alpha version of the next Windows-Longhorn |
| Jakarta | JAVA-Engine for Internet Explorer 3.0 |
| Kagera (Kajera??) | OLE-DB Provider for ODBC-Data |
| Kahuna | Windows Live Mail |
| K2 | Internet-Information-Server 4.0 |
| Lightning | .NET Common Language Runtime (CLR) |
| Luna | Theme technology for Windows XP |
| Luxor | OLE-Provider-Services for Yukon |
| Magic Carpet | Passport-Technologien |
| Marvel | Microsoft Network (MSN) |
| Merlin | Microsoft® Internet Explorer for Dreamcast (cancelled circa 1999). |
| Mercury | DUN 1.2 update for Win95 |
| Monad | Longorn Command Shell. Msh is the new scripting and automation environment for Windows |
| NGWS | (Next Generation Windows/Web Services) .Net |
| Normandy | Microsoft Commercial Internet System (MCIS) |
| Oprah | Netmeeting |
| Nile | OLE-DB |
| O'hare | Internet Explorer 1.00. |
| Plato | OLAP-Server air jordan 11 |
| Project 42 | (from Lightning) .NET Common Language Runtime (CLR) |
| Ren | Outlook |
| Quartz | Direct Show |
| Sideshow | Task Shelf of Longhorn (MS research) |
| Slate | Microsoft Management-Console (MMC) |
| Spark | Integration of Windows SharePoint Services and CMS |
| Steelhead | Windows NT Routing & Remote-Access Services (RAS) |
| Tahiti | SharedView Beta2 |
| Talisman | 3D Graphic- und Multimedia Architecture |
| Tensor | OLE-DB Extensions for OLAP |
| Touchdown | Outlook 97 (Also mentioned:Public folders for MS Exchange) |
| Trident | Dynamic HTML (DHTML) |
| Tungsten | Microsoft Rights Management Services (RMS) |
| Whisper | Speech Recognition (speech-to-text) |
| Xenon | Xbox 360 |