- MarlinFirmware/Marlin 1,738 Reprap FW with look ahead. SDcard and LCD support. It works on Gen6, Ultimaker, RAMPS and Sanguinololu
- grbl/grbl 1,600 An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on a straight Arduino
- OculusVR/RiftDK1 649 Firmware, Schematics, and Mechanicals for the Oculus Rift Development Kit 1
- synthetos/grblShield 78
- lukeweston/LaserCutter 8 CNC laser cutter controller, compatible with LaserSaur but better.