Open Source Solid Modeling CAD
FlightGear Flight Simulator: free open-source multiplatform flight sim
3D Engine c++
Earth orbits and satellite coverage display in 3D on your laptop.
An interactive viewer for three-dimensional chemical structures.
Tools to process and visualize scientific data and images
Java3d scenegraph editor
A real-time 3D Engine written in Ada
Doing 3D with Tcl
realistic driving simulation + functions for 2D/3D graphics
Xj3D is an open-source Java codebase for the X3D Graphics standard.
A simple 3D framework in C++
CIRT - CUDA Interactive Ray Tracer