Iteration 2 of the OpenGL C# 3D game engine.
Latest version is: 2.1
A multithreaded version is still in experimental state. Please stick to the single threaded approach for now.
Example project can be found here.
A wiki with a detailed tutorial on how to use the engine can be found here.
The official Website can be found here.
An OpenGL beginner's tutorial for 2D can be found here.