There are 2 repositories under reprap-3d-printer topic.
RepRap Version of the Positron V3 3D-Printer, improved design, no machined parts, integrated PSU
Mostly 3D printed toolchanger mechanism
Marlin 2.0.5.3 Version for Anycubic Kossel Linear Plus with LCD 12864 RepRap Full Graphic Smart Controller
Upgrade your old Craftbot Plus 3D-printer to a modern RepRap 3D-printer!!
An OpenSCAD designed 3D printer with CoreXY motion, built around 2020 alu extrusion
3D Printer
Optimized firmware for RepRap 3D printers based on the Arduino platform.
Marlin Firmware for Robo 3D R1+ with Buildtak FlexPlate
Marlin Firmware for Robo 3D R1 with Garolite Surface
PCB for universal-panel-adapter
cheap, compact 32 bit 3D printer controller
4R Reducir-Reutilizar-Reciclar-Recuperar