Pentoo is a security-focused livecd based on Gentoo
It's basically a gentoo install with lots of customized tools, customized kernel, and much more..........
Kernel 2.6.31.6 with lzma and aufs patches
Wifi stack 2.6.32_rc7
Module loading support ala slax
Changes saving on usb stick
Enlightenment DR17 WM
Cuda/OPENCL cracking support with development tools
System updates if you got it finally installed

Download
http://mirror.switch.ch/ftp/mirror/pentoo/

CAT is designed to facilitate manual web application penetration testing for more complex, demanding application testing tasks. It removes some of the more repetitive elements of the testing process, allowing the tester to focus on individual applications, thus enabling them to conduct a much more thorough test. Conceptually it is similar to other proxies available both commercially and open source, but CAT provides a richer feature set and greater performance, combined with a more intuitive user interface.

Download
http://cat.contextis.co.uk/cat/CAT_Beta_4.msi