Freedom 4 Android (F4A) is a Tiny Core Linux remix which integrates various tools that will help you take back full control of you Android device. This means rooting, S-OFF and so on.
The included tools are distributed as tcz modules, and repacked as a bootable CD, USB image or virtual machine disk.
F4A is OSS (full sources are available on the Download page), but some of the shipped tools might not be.
Link: newbielink:http://f4a.mybox.ro/ [nonactive]