Functy is a 3D graph drawing package that generates immediate results.
3D .NET engine for Windows, Linux, Mac
A public domain cross platform 3D game
kicad 3D is aimed to add 3D realistic feature on kicad pcb CAD
simple 3d scene viewer for windows/linux/android
Gimpel3D - 2D/3D Stereo Conversion Editor
A small library to create SDL 2 - OpenGL applications.
An object oriented 3D graphics API on top of OpenGL
Minimalist 3D Scenegraph Management Framework
loadmd2_chung is a dll to load 3D md2 models into openGL
Volume Rendering library in Java