Accuracy-focused XNA4 reimplementation for open platforms
Video game library manager with support for wide range of libraries
One framework for creating powerful cross-platform games
A charting and data visualization library for Unity
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Mad Vandal's FortressCraft Mod Source Code
Sims 3 (and other) game package library
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Sudoku engine for .NET 4.0 and up
An assistant for Marvel Digital Comics Unlimited subscribers.