IPocket Draw - CAD, DAO, dessin, drawing, vectorial, vectoriel, iphone, DXF, autocad
FreeCAD - An open-source parametric 3D modeler
SketchUp - 3D for Everyone
OpenSCAD - OpenSCAD is a software for creating solid 3D CAD objects.
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.