a parametric 3D CAD modeler
The programmer's solid 3D CAD modeller
A free and open source multiplatform 3D parametric modeler
Open Source Solid Modeling CAD
Geometric kernel for CAD programs using an atomic approach
Open-Source Shoemaking
Simple CAD program
A designer’s program for describing parts of the building
Cuts 3D objects from polystyrene foam (EPS/XPS)