3D Engine c++
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
Viewer and exporter for Unreal Engine 1-4 assets
Cross-platform 2D and 3D game engine
.NET wrapper for the Irrlicht Engine
Realtime 3D engine for game development
A 3D application in which you can move around in space
simple 3d scene viewer for windows/linux/android
PixelLight is a cross-platform application framework