Open Source 3D Printer Driver First created in 2011 for RepRap and Ultimaker by Erik van der Zalm et. al., today Marlin drives most of the world's 3D printers. Reliable and precise, Marlin delivers outstanding print quality while keeping you in full control of the process. As an Open Source project hosted on Github, Marlin is owned and maintained by the maker community. Learn how you can contribut