I am making the JSRF ModTool open source, I wanted to do this for a while but wasn't very confident about my code, either way its best to put it out there once and for all.
If you're a programmer and are interested in modifying the tool for personal use, or contributing, I am all for it, I am also all ears if you have feedback on my coding, bad practices etc I would love to hear it so I can improve.
Cheers!