There are 5 repositories under reprap topic.
Marlin is a firmware for RepRap 3D printers optimized for both 8 and 32 bit microcontrollers. Marlin supports all common platforms. Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.
The world's most 3D printable 3D printer. (Guinness Book of World Records 2017 & 2018)
RepRap Version of the Positron V3 3D-Printer, improved design, no machined parts, integrated PSU
ADVi3++, an alternative and better firmware for Wanhao i3 Plus printers and clones. Fork of Marlin Firmware.
Marlin 2.0.X for the MKS Robin Nano 1.1/1.2
Alternative to PanelDue. Embedded UI for Duet & RepRap based 3D printers. Running on the ESP32. Optimized for 3.5" displays. WiFi or UART connectivity.
Mostly 3D printed toolchanger mechanism
Optimized firmware for RepRap 3D printers based on the Arduino platform. The branch Marlin2ForPipetBot is optimized firmware for cartesian robots (lab robots, also known as liquid handling robots or pipetting robots)
All-in-One Marlin firmware for your 32-bit Prusa MK2.5S & MK3S/+ Bear!
Customized U8glib for use in Marlin 2.0
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 source code for your specific machine.
A premium-quality 3D printer control board by Aus3D.
Create dovetail and cut piece with OpenScad
A touchscreen client for Octoprint
3DHex is a windows host controller 3D printer firmware
Upgrade your old Craftbot Plus 3D-printer to a modern RepRap 3D-printer!!
G-code visualizer and inspector
Repository to share my custom 3D printing designs
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 source code for your specific machine. In this case especially for Tronxy 3D printer
Passive self-watering 3D-printable vegetable pot, inspired by the chinampa (floating garden bed)
All-in-One Marlin firmware for your 32-bit Creality Ender-3!
CR-10 - SKR 1.4Turbo - Marlin 2.0
Python-based gcode generator
A module that parses user GCode, and annotates it with documentation
Gcode converter from LaserWEB generated Gcode to Marlin compatible Gcode
Xcontroller interfaces with 3D printers firmwares through GCode. Uses WSS for communication and GCode response parsing.