OpenGDK is short for Open Game Development Kit. It's supposed to be a plug-in BASED (it's different from OGRE. OGRE is plug-in friendly), cross-platform, open source, general purpose (2D, 3D, client, server, editor), game development kit.
This project aims at writing a threaded, object-oriented and scriptable game engine targetting the .NET platform, using a mixture of c# or managed c++ ports of famous c/c++ components such as OGRE, CEGUI, Newton, Lua, Python, Audiere, OpenAL, etc...