Customize your marlin 3d printer firmware by Ioakeimsogiakas | Fiverr
GitHub - MarlinFirmware/Marlin: Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need
Marlin 2.0 Open Source 3D Printer Firmware Finally Released - CNX Software
Marlin 3D Printer Tool – Marlin3dPrinterTool is a open-source software that helps you configure and test your 3D printer.