Open Source Solid Modeling CAD
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.
HARFANG 3D source code public repository
A processing system for 3D triangular meshes
A C++ Tool for the Fast Prototyping of Topological Data Structures
Multimedia asset management and manipulator for Étoilé
a structure from motion library
A microscopic pedestrian crowd simulation system and library
.NET library for generating 3D models of trees and forests.
A Ruby script to export Google SketchUp scenes as Ogre 3D meshes