IPocket Draw - CAD, DAO, dessin, drawing, vectorial, vectoriel, iphone, DXF, autocad
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
SketchUp - 3D for Everyone
FreeCAD - An open-source parametric 3D modeler
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
MakerSCAD - Powerfull 3D design tool for 3D printing, virtual reality and game engine.