7zSharp is a .NET 2.0 LGPL wrapper around the 7z LZMA SDK and executable written in C#, providing a library (DLL) wrapper and simplified API to encode and decode using the 7z library.
This is a project to build reliable .NET bindings for the Subversion version-control system libraries. This is a continuation of the SubversionSharp library initially created by Softec and released under the LGPL.
An Open Source media-tagging library with support for ID3, ASF, APE, Xiph, and other media tags embedded in everything from .asf to .wv including mp3 and mpeg4, wmv, etc.
Supports a large variety of movie and music formats and abstracts away the differences so you can just write: file.Tag.Title, file.Tag.Duration ... etc.
Visual WebGui is another 'Web like Desktop' platform that offers an open source framework to develop applications that work in *both* DHTML/AJAX and Silverlight