This is the software that will drive your MakerBot Replicator, Thing-O-Matic, CupCake CNC, RepRap machine, or generic CNC machine. You can give it a GCode or STL file to process, and it takes it from there.

Cura is described as 'Aims to be a end solution for personal 3D printing with RepRap based machines. It is tuned toward the Ultimaker, but can be used on any RepRap based design' and is a 3D Printing tool in the system & hardware category. There are more than 25 alternatives to Cura for a variety of platforms, including Windows, Mac, Linux, Web-based and Flathub apps. The best Cura alternative is Orca Slicer, which is both free and Open Source. Other great apps like Cura are PrusaSlicer, Bambu Studio, MatterControl and Slic3r.
This is the software that will drive your MakerBot Replicator, Thing-O-Matic, CupCake CNC, RepRap machine, or generic CNC machine. You can give it a GCode or STL file to process, and it takes it from there.

SuperSkein is a first-order model slicer that runs in Processing. It's pretty basic still, but since it's object oriented and in Processing (which could be quickly ported to C) it should be easy for the community to hack and improve.