Open Source Mach3 Alternatives
The best open source alternative to Mach3 is LinuxCNC (the Enhanced Machine Control). If that doesn't suit you, our users have ranked nine alternatives to Mach3 and three of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Mach3 are Blender CAM and PyCAM.
LinuxCNC controls CNC machines. It can drive milling machines, lathes, 3D printers, laser cutters, plasma cutters, robot arms, hexapods, and more.
Blender CAM is an open source solution for artistic CAM - Computer aided machining - a g-code generation tool.
PyCAM is a toolpath generator for 3-axis CNC machining. It loads 3D models in STL format or 2D contour models from DXF or SVG files. The resulting GCode can be used with EMC2 or any other machine controller.
PyCAM vs Mach3 opinions
Cam software can't control a CNC machine.