1. ArcwelderpluginA plugin for OctoPrint used to convert G0/G1 commands to G2/G3 commands. Reduce the size of your gcode files, and reduce number of gcodes per second sent to your printer.
5. CuraenginePowerful, fast and robust engine for converting 3D models into g-code instructions for 3D printers. It is part of the larger open source project Cura.
6. GpxGcode to x3g conversion post processor
7. GokoA desktop application for CNC milling controller running TinyG or Grbl
10. Awesome PlottersA curated list of code and resources for computer-controlled drawing machines and other visual art robots.
11. Laserweb4Collaborative effort on the next version of LaserWeb / CNCWeb
12. G2g2core - The Next Generation
13. PycncPython CNC machine controller for Raspberry Pi and other ARM Linux boards
15. Grbl PlotterA GCode sender (not only for plotters) for up to two GRBL controller. SVG, DXF, HPGL import. 6 axis DRO.