Web CAD software
Realtime Media Engine (2D/3D/Audio)
Pear3DEngine is a modern and modular 3D development framework
A Fast Light Neuron Tracing and Editor Tool
3D modeling for everybody
A free editor for openSCAD based on .NET Scintilla
Add-ons for the 3D Terrain & Landscape Editor Artifex Terra 3D
Electronic Computational Cancer Systems Biology Simulation Studio
true 3D Labyrinths - generating, rendering, exploring, building
An editor to create Bitmaps of pseudo 3D cubes like Captive on Amiga
Easy Terrain editing and Heightmap creation
A 3D scene editor for Ogre in Purebasic
A complete 2D Game Engine with built in drag and drop editor
Java3D Scene Creator
A quick rapid-prototyping level editor using the Panda3d source code.
Cuts 3D objects from polystyrene foam (EPS/XPS)