The Tiny JavaScript Game Engine That Can!
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Vivid is a modern C++ 3D engine using OpenGL4+
3D C++ Game Engine - yet another open source game engine
A Smarter Way to Tag FLAC, Vorbis, Lyrics, WMA, WavPack, and ID3 Tags
Processes dialogue text files exported by the Bethesda Softworks SDK
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
TurboSphere is an easy to learn and powerful JS based game engine.
Pear3DEngine is a modern and modular 3D development framework