LeoCAD - LeoCAD is a CAD program for creating virtual LEGO models.
3D Object Converter - 3D Object Converter, a powerful 3d polygon model translation and interactive viewing shareware tool...
LDraw - LDraw is an open standard for LEGO CAD programs that allow the user to create virtual LEGO models...
noesis - Rich Whitehouse's project web site.
LDCad - LDCad is a multiplatform ...
AccuTrans 3d - AccuTrans 3D provides accurate translation of 3D geometry between the file formats used by many...