Repetier is described as 'Software for controlling RepRap style 3D-printer like Mendel, Darwin or Prusa mendel. Works with most firmware types. It is optimized to work with Repetier-Firmware Other working firmware is Sprinter, Teacup, Marlin and all compatible firmwares' and is a 3D Printing tool in the system & hardware category. There are more than 10 alternatives to Repetier for a variety of platforms, including Windows, Mac, Linux, Flathub and SaaS apps. The best Repetier alternative is Bambu Studio, which is both free and Open Source. Other great apps like Repetier are Cura, PrusaSlicer, MatterControl and Creality Print.
Not a source to actually control and interface with reprap 3d prtiner like Repetier can.