greenpois0n is a multi-platform (meaning it works on Windows, Mac, Linux and PC) jailbreak for iPhone, iPod touch, and iPad. It uses the SHAtter exploit, and is a very simple and easy to use GUI jailbreak.
File Name: gp_mac_rc4.zip
File Name: gp_lin_rc3_3.tar.bz2
Greenpois0n Download for Linux
File Name: gp_win32_rc4.zip