Chaos, a Linux distribution developed by Australian Ian Latter, harnesses the unused processing power of networked PCs, creating a distributed supercomputer that can crack passwords at lightning speed.
The program remotely boots Linux on a PC without touching the hard drive, leaving the 'slave' PC's operating system and data secure and untouched. Thirty PCs connected as a cluster create enough processing power to complete complex mathematical equations or high-level security tasks like password cracking that no individual PC could handle alone.
various distros:
Chaos
openMosix
Quantian