Ralph, our friendly admin, has kindly added this forum entry for comments regarding Linux software applications in general and my Diode Laser Command Module (DLCM) in specific. I am not interested in competing with T2Laser or BCL and have absolutely no interest in providing long term support but I do use Linux as my primary development system and have a somewhat working application.
My work flow for cutting has been to design in OpenScad and export to a 2D SVG file. This is primitive straight lines only, no arcs.
For etching I load png or jpg files. Etching is nowhere close in quality to T2Laser.