Blockbench - A low poly 3D model editor
Blender addons to make the bridge between Blender and geographic data
The open source mesh processing system
3D engine with modern graphics
Highly Optimized Graphics Math (glm) for C
An interior design application to draw house plans & arrange furniture
a parametric 3D CAD modeler
Open Source Solid Modeling CAD
Java3d scenegraph editor
X3D is the open-standard format for 3D graphics scenes on the Web.
3D modeler, 3D game maker, 3D demo maker
Xj3D is an open-source Java codebase for the X3D Graphics standard.
3D slider puzzles for kids; helps teach solid geometry
Subdivision Surface Object Creator Open Source Project
C# graphics library used for 3D modeling, built with OpenGL/OpenTK
3d Procedural Generator
Open-Source Shoemaking
3D PBR Texture Painting Software