Coding4Fun Toolkit - Complete
The Coding4Fun Toolkit has multiple controls and useful items such as a GzipWebClient and Audio Recorder for XAML based applications. This is the complete version which includes the network, storage wrappers, controls, and audio helper libraries.
LEGO Mindstorms EV3 API
Control your LEGO Mindstorms EV3 kit! With this API, you can connect to and control your LEGO EV3 brick over Bluetooth, WiFi, or USB. This project provides libraries that are usable from the Windows desktop, Windows Phone 8, and WinRT (via .NET, WinJS and C++), along with full source code.