IPocket Draw - CAD, DAO, dessin, drawing, vectorial, vectoriel, iphone, DXF, autocad
Slic3r - STL-to-GCODE translator for RepRap printers Here comes Slic3r! Its features are: - speed
SketchUp - 3D for Everyone
Repetier - Software for controlling RepRap style 3D-printer like Mendel, Darwin or Prusa mendel.
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
MatterControl - MatterControl is a free, open source app that lets you organize and manage your 3D prints.