Injectable LUA scripting system, SDK generator, live property editor
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Flexible level editor
3D Procedural Game Engine Using OpenGL
For exploring cellular automata like Conway's Game of Life.
LDraw™ editor for LEGO® style digital building instructions.
OpenGL port of the classic 6dof 3D shooter Descent
A 2D game engine and level editor
3D-Accelerated open-source DOOM engine
Tag FLAC ,Vorbis, Lyrics, WMA, Wavpack, ID3 Tags in a Smarter Way.
Lego Island 2 Game Editor
Clone of Urban Assault with new Graphics.
Converts Minecraft world files between formats to allow editing
Multimedia asset management and manipulator for Étoilé
A bomberman clone.
3D Game engine
A game development kit for Sifteo Cubes.
Phobos editor is a generic resource editing system.