Well, it runs on Windows, and the software is available for free. You'd just need to leave your computer on as often as you can so others can connect to your IP address.
Anyway, my internet finally got somewhat back on track. It's been dead, on and off, for two weeks.
Paint to post!
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram