Fiddling around with Raspberry Pi for something unrelated to c9, I put c9 onto the Raspberry Pi just to see how it would go.

C9, which is based on Java will run on pretty much anything. Although all bike shops run windows, c9 is equally at home on Mac or Linux.  All software development done within c9 is on linux workstations actually.  C9's database, PostgreSQL is also able to run on most anything too.

So $50 computer the size of a wallet, running linux and drawing less than 2 Watts.  Got c9 up and running in about 30 minutes.  Doesn't run terribly fast compared to a basic office workstation (Key problem is SQL databases are not at all optimised to run off SD cards, an external SSD or HDD would be the go here, or maybe something better than the cheapest SD card in the shop). Still pretty cool I think.