The Imaginary Game Engine project tries to create a full-featured, modular and multi-threaded game engine in C#, and can run with Microsoft's .NET framework or Mono on either Microsoft Windows, Linux or Apple's MacOSX.

kinetX is a framework for creating client server applications. It is a set of libraries that simplify the creation of LAN or Online games.
This framework defines the server side logic as an independent entity that can be loaded by the kinetX server and run. kinetX implements the support for Bonjour that allow easy finding of the LAN servers. kinetX is cross platform! It can run on Windows, Linux, MacOS or FreeBSD....

N2 is a lightweight CMS framework that focuses on ease of use and developer experience. Web content editors will enjoy a simple and enabling web interface while developers can benefit from a discoverable and open-ended API.

Project in its very early infancy. Looking to build a mono library to access package/repository information form Lunar-Linux installs. When the project matures a bit more, I will be finding a better home for the source.

Dawn of Light is the first and only active open source server emulator for the MMORPG Dark Age of Camelot (DAOC), built using C# and the .NET 2.0 Framework.

Nemo is a new way of managing files, or rather, not managing files. Currently, it's a cross between a calendar and a file browser with labels.

Jogo is a program to easily create computer games.

The download page and the complete website are in dutch. Sorry for that

Footloose is a open source distributed computing library implementation.,

Banter is a next generation real time collaboration client focused on
the big three: text, voice and video. It's centered on a dynamic,
innovative and easy to use contact management system.

Weavver™ is a framework for building an open and transparent internet company.,