AieshaDot

ASP.net MVC Awesome - jQuery Ajax Helpers
AutoPoco
Code Snippet With Syntaxhighlighter Support for Windows Live Writer
Community for ASP.Net MVC - http://CommunityForMvc.Net
Extend SmallBasic
Json.NET
Managed Extensibility Framework
Microsoft Media Platform: Player Framework
MVC Turbine
MvcContrib: an Outer Curve Foundation project
NerdDinner.com - Where Geeks Eat
PowerShell Community Extensions
Sterling NoSQL OODB for .NET 4.0, Silverlight 4 and 5, and Windows Phone 7