raal

.NET Extensions Methods Library for C# and VB.NET (ASP.NET, MVC, SL, WPF, EF)
AJAX Control Toolkit
ASP.NET
ASP.net MVC Awesome - jQuery Ajax Helpers
ASP.NET MVC SiteMap provider
ASP.net Ribbon
AspNetPager
AvalonDock
Base Class Libraries
Calcium: A modular application toolset leveraging Prism
Caliburn Micro: WPF, Silverlight, WP7 and WinRT/Metro made easy.
Caliburn: A Client Framework for WPF and Silverlight
CassiniDev - Cassini 3.5/4.0 Developers Edition
Client Tools for umbraco
Clog: Client Logging for .NET
Common Contracts for WCF
CommonLibrary.NET
Composite Extensions / Test Suite reference implementation
Composure
Desktop Google Reader