Widescreen

ASP Classic Compiler
ASP.NET
AWS SimpleDB Browser
Fluent Json
Linq To SimpleDB
Lokad Cloud - .NET O/C mapper (object to cloud) for Windows Azure
Microsoft All-In-One Code Framework - a centralized code sample library
NBooks Accounting
NuGet
Orchard Project
patterns & practices – Enterprise Library
Simol (formerly Simple Savant)