Guyane

.NET Micro Framework
AOP Caching Components
ClosedXML - The easy way to OpenXML
CommandLine Parser Library
DotNetZip Library
ESENT Managed Interface
Facebook C# SDK
fluentAOP - A Fluent AOP Library for .NET
Html Agility Pack
MailSystem.NET
Managed, Native, and COM Interop Team
Microsoft All-In-One Code Framework - a centralized code sample library
Microsoft Spain - Domain Oriented N-Layered .NET 4.0 Sample App
NETMF Bicycle Computer
NSurgeon Aspects static weaver
Parallel Programming with Microsoft .NET
Queueing model
Smart Thread Pool
WiX Toolset
XPO Automatic Properties