Its website says the following about Kali:
*From the creators of BackTrack comes Kali Linux, the most advanced and versatile penetration testing distribution ever created. BackTrack has grown far beyond its humble roots as a live CD and has now become a full-fledged operating system.*
Would you like that I make a tutorial about their use?
Link: [Download Kali](http://www.kali.org/downloads/)
Cheatsheet: [Kali Linux Cheat Sheet](https://comparite.ch/kalics)