An addon for 3D editing applications that optimizes/simplifies the meshes.
eDrawings for Google SketchUp provides an innovative way to share your designs.
Simple CAD program that is fast, easy to learn.
This program is a quick 3D model browser for Windows 9x/2K/XP.
Polycount is an ArchiCAD add-on that helps you control the number of 3D polygons
