The smaller engravers like the one pictured above use a variety of things, and people experienced with larger CO2 laser cutters may be familiar with a piece of software called LaserCut - a combination CAD program and laser control that is serviceable, but closed (my copy even requires a USB security dongle, eww.) LaserWeb is important because most laser engravers and cutters have proprietary software. The laser engraver used in the video is one of those economical acrylic-and-extruded-rail setups with a solid state laser emitter available from a variety of Chinese sellers (protective eyewear and any sort of ventilation or shielding conspicuously not included) but LaserWeb can work with just about any hardware, larger CO2 lasers included. LaserWeb is open-source laser cutter and engraver software, and made a video tutorial (embedded below) on how to convert a cheap laser engraver to use it.
