Gideros Release version
Java Settlers
Quake PAK file utility
Single-/multi-player card game Mau Mau (similar to UNO®)
THIS SOFTWARE IS IN PRE-PRE-PRE-PRE-ALPHA. So don't really download it
Multimedia asset management and manipulator for Étoilé
A world editor for HGE game engine written in python and uses OpenGL.
3D game engine for C and C++
Open source network game service
A very small multi-platform game engine for creating desktop games.
An open source skateboard games engine written in C# and .NET.
Pear3DEngine is a modern and modular 3D development framework
An extensible development framework for roleplay games.
C++ Game programming Framework
SDK for Resident Evil Games
Read and write PGN format and test moves for legality.
Make games with Lego-like building blocks