Slic3r - STL-to-GCODE translator for RepRap printers Here comes Slic3r! Its features are: - speed
FreeCAD - An open-source parametric 3D modeler
Repetier - Software for controlling RepRap style 3D-printer like Mendel, Darwin or Prusa mendel.
Solid Edge - Solid Edge is an industry-leading mechanical design system with exceptional tools for creating and...
MatterControl - MatterControl is a free, open source app that lets you organize and manage your 3D prints.
OpenSCAD - OpenSCAD is a software for creating solid 3D CAD objects.