Kali Linux is an open-source, Debian-based Linux distribution aimed at advanced Penetration Testing and Security Auditing.Kali Linux is a multi-platform solution, accessible and freely available to information security professionals and hobbyists.The "Kali Linux" trademark is a trademark of OffSec in the U.S. and other countries.

Kali Linux contains industry specific modifications as well as several hundred tools targeted towards various Information Security tasks, such as Penetration Testing, Security Research, Computer Forensics, Reverse Engineering, Vulnerability Management and Red Team Testing.