Mahlzeit

ANX.Framework
Bling UI Toolkit
Calcium: A modular cross-platform application toolset
Coding4Fun's ScriptTD
Common Compiler Infrastructure - Code and AST components
Common Compiler Infrastructure - Metadata
DirectX Tool Kit
Engine Nine: Game Engine for XNA
GLEED2D - Generic Level Editor 2D
IronScheme
Irony - .NET Language Implementation Kit.
Krypton XNA
Mercury Particle Engine
NuclearWinter
PowerDbg - Automated Debugging using WinDbg and PowerShell
PowerGUI Visual Studio Extension
Python Tools for Visual Studio
SharpGL
Sprite Sheet Packer
Swf.Net