PetitEditor

A web-based editor & QR code generator for Petit Computer. Paste your source code into the box and generate QR codes directly.

This seems to crash far less than PTCUtilities, but it can only be used to edit/create PRG files.

PetitEditor also seems to generate more QR codes per program than PTCUtilities does.

Link: http://www2.u-netsurf.ne.jp/~ozawa/petitcom/petiteditor.html