"Live Linux CDs are popping up all over the place. Mainstream
distributions like SimplyMEPIS let you try before you install, as
does Ubuntu and Linspire. There are also specialized distributions
like Knoppix and Dynebolic.
"One Gentoo Linux-based distribution, called Sectoo, might also
warrant a 'live' look.
"Anthony Rousseau, a native of France, created Sectoo so that
penetration testers and consulting companies would have a toolbox
designed to help them during their work..."