Get as many FPS as you need and amazing effects by rendering HTML/CSS
A really simple (following K.I.S.S statement) ray tracing project.
PHIGS (Programmer's Hierarchical Interactive Graphics System)
3D tree generator
simple 3d scene viewer for windows/linux/android
A raytracing framework for optical/non-optical physics simulations
A world editor for HGE game engine written in python and uses OpenGL.
an interactive 3D viewing program
A cross-platform game framework based on OpenGL and GObject.
Gimpel3D - 2D/3D Stereo Conversion Editor
3D game engine for C and C++
An object oriented 3D graphics API on top of OpenGL
Imprudence is an open source metaverse viewer project.
Pear3DEngine is a modern and modular 3D development framework