Blockbench - A low poly 3D model editor
A free and open source multiplatform 3D parametric modeler
A python parametric CAD scripting framework based on OCCT
The programmer's solid 3D CAD modeller
STL Viewer for java
3D modeler, 3D game maker, 3D demo maker
LDraw™ editor for LEGO® style digital building instructions.
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
An easy to use and lightweight CAD model data management tool.
The Filmakademie Application Framework
A 3D scene editor for Ogre in Purebasic
Hashing and spatial concurrency library.
Cuts 3D objects from polystyrene foam (EPS/XPS)
Convert heightmaps to stl
1st 3D game engine built in C# for .NET, Visual3D Engine's predecessor
A serial robot kinematics library