Blockbench - A low poly 3D model editor
An interior design application to draw house plans & arrange furniture
Open Source Solid Modeling CAD
Create and edit LDraw™ parts quick and easy.
Java3d scenegraph editor
X3D is the open-standard format for 3D graphics scenes on the Web.
Xj3D is an open-source Java codebase for the X3D Graphics standard.
Growth-grammar related Interactive Modelling Platform
Free 3D Mobile CAD
CSG for jMonkey
Faceting design software
Virtual paper folding program
A simple and easy to use render farm for Blender
3D tree generator