Monarghel

.NET Extension
Array Visualizer
Build Version Increment Add-In Visual Studio
Caliburn Micro: WPF, Silverlight, WP7 and WinRT/Metro made easy.
Catel - application development platform with MVVM support (WPF, SL, WP, WinRT)
Chaining Assertion
Chutzpah - A JavaScript Test Runner
CommonLibrary.NET
Cosmos (C# Open Source Managed Operating System)
Craig's Utility Library
CUITe (Coded UI Test enhanced) Framework
CuttingEdge.Conditions
dFactor (OSS)
Extensions for Reactive Extensions (Rxx)
Fluent Assertions
Fluent Validation for .NET
Guia - Graphical User Interface Automation
Hawkeye - The .Net Runtime Object Editor
Json.NET
LINQ Extensions Library