[pcb.py](pcb.py): FRep PCB design [frep.py](frep.py): pure Python FRep renderer [frep-C.py](frep-C.py): faster Python+C FRep renderer [frep_gpu.py](https://gitlab.fabcloud.org/pub/project/frep_gpu.py): faster GPU renderer [gerber plot](https://modsproject.org/?program=programs/formats/gerber%20plot): image to Gerber converter board:  top:  bottom:  mask:  holes:  interior:  text:  Gerber: 