grob6000's Stars
MarlinFirmware/Marlin
Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.
Smoothieware/Smoothieware
Modular, opensource, high performance G-code interpreter and CNC controller written in Object-Oriented C++
KiCad/kicad-packages3D
Official KiCad 3D model libraries for rendering and MCAD integration
easyw/kicad-3d-models-in-freecad
kicad 3d models in freecad