Pentoo is a Live CD and Live USB designed for penetration testing and security assessment. Based on Gentoo Linux, Pentoo includes Nessus and Metasploit for penetration testing and security assessment. The user interface is the Enlightenment window manager. Pentoo is optimized for Pentium III architecture. Pentoo supports package modularity in the same fashion that Slax does.
Pentoo 2009.0 final was released on December 5, 2009; with 32 and 64 bit versions.