Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Panda3d to Tcl bindings
free implementation of the OpenGL Character Renderer
Implemention of SGI's Open Inventor.
3D Charts - Templates for PovRay(TM)
JavaScript helpers for rendering high-resolution image variants
Tiny but powerful single file wavefront obj loader
Coin3D Qt GUI Library
A processing system for 3D triangular meshes
Kokua is a V3 based open source metaverse viewer project.
Maxwell Render for Blender
Real-time 3D viewer for LDraw LEGO models with OpenGL acceleration.
3D .NET engine for Windows, Linux, Mac
A public domain cross platform 3D game
Texture font for OpenGL applications
Get as many FPS as you need and amazing effects by rendering HTML/CSS