3D modeler, 3D game maker, 3D demo maker
a parametric 3D CAD modeler
HARFANG 3D source code public repository
Growth-grammar related Interactive Modelling Platform
A customizable 3D platform for agent-based AI research
Flat, round, designer-friendly pseudo-3D engine for canvas & SVG
Java3D Scene Creator
The X3DV Module Suite is a free set of Netbeans modules to code in X3D