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One Windows - everything you need to build great apps.

Windows Phone Silverlight 8.1

Have an app written in Silverlight? Update to Silverlight 8.1 with this release.

Windows Phone 8.0 Development

Still need access to the Windows Phone 8 (Silverlight) development library and resources? We’ve got you covered.

Learn more Windows Phone concepts, architecture, tools, and resources

Review the app architecture for Windows Phone
Get acquainted with some general Windows Store app architecture concepts.
Windows Phone API reference
Learn about the API reference for Windows Store apps, including .NET API for Windows, Win32 and COM API, and Windows Runtime API.
Developer downloads
Get the tools now! You’ll find everything you need to build compelling apps for phones, tablets and PCs. Or tap into additional resources from the Windows developer ecosystem.
Partner resources
Get resources from partners, communities, and individuals to build better apps, faster.