The open-asset-importer-library repository
Resilient Image Library - successor to DevIL
Vivid is a modern C++ 3D engine using OpenGL4+
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
TurboSphere is an easy to learn and powerful JS based game engine.
Pear3DEngine is a modern and modular 3D development framework
Chess game interface