Slic3r

Slic3r is free software 3D slicing engine for 3D printers. It generates G-code from 3D CAD files (STL or OBJ). Once finished, an appropriate G-code file for the production of the 3D modeled part or object is sent to the 3D printer for the manufacturing of a physical object.^[2][3] As of 2013, about half of the 3D printers tested by Make Magazine supported Slic3r.^[4]

Original author(s)	Alessandro Ranellucci
Stable release	1.3.0 / May 10, 2018; 6 years ago (2018-05-10)[1]
Repository	github.com/alexrj/Slic3r
Operating system	Microsoft Windows, Mac OS X, Linux
Type	3D printer slicing application
License	GNU AGPL
Website	slic3r.org

Prusa Research maintains an advanced fork called PrusaSlicer.^[5][6]

SuperSlicer is a further fork of PrusaSlicer.^[7]