The DevPhone for Windows Phone Toolkit provide the developer community with new components, functionality, and an efficient way to help shape product development. The releases include open source code, samples & docs, plus design-time support for the Windows Phone platform.

Portable Class Libraries Contrib (PclContrib) provides portable adapters and APIs that help bridge the gap between different .NET platforms when using the new Portable Class Library feature. This makes it easier to convert existing platform-specific projects over to use portable APIs.

A collection of standard controls, animations and helpers for creating beautiful and consistent WP7 & WP8 apps

SharpSerializer is an open source XML and binary serializer for .NET Framework, .NET Compact Framework and Silverlight. It was developed with C#. Actually SharpSerializer can serialize to Xml and to its own binary format.

The Windows Phone 7 Accelerometer Simulator Kit helps developers test their Windows Phone 7 applications that use the accelerometer in the emulator. So if you don't have a Windows Phone or don't wan't to be constantly deploying your app to one, this is perfect for you!

A project for sharing XAML based resources for creating consistent Windows Phone 7 user experiences

A framework for automated testing of Windows Phone applications. It contains UnitTest, UITest and Performance Test.

This library helps you to build, deploy and update a HTML app to Windows Phone device as a native WP7 App. Library extract HTML content from application resource to isolated storage.