PrusaSlicer takes 3D models (STL, OBJ, AMF) and converts them into G-code instructions for FFF printers or PNG layers for mSLA 3D printers. It’s compatible with any modern printer based on the RepRap toolchain, including all those based on the Marlin, Prusa, Sprinter and Repetier firmware. It also works with Mach3, LinuxCNC and Machinekit controllers.
while one certainly can argue that the website is advertising and promoting subscription models (https://www.prusa3d.com/prusaslicer/), the application itself PrusaSlicer is available as trade-free, as there are no trackers, ads or money involved. Therefore this service might be listed here.