GPL software which renders realistic skies in real time
MathMod is a mathematical modeling software
LDraw™ editor for LEGO® style digital building instructions.
Finite Element Program 3D Qt
Create, display and process 2D vectors in a 3D window.
A planetarium software that shows a 3D simulation of the night sky
gMol molecular graphics
collection of illustrative programs:small games, simulators: C, Matlab
A 3D rendering / entity engine