Kali Linux
The most advanced Penetration Testing Distribution
Kali Linux is an open-source, Debian-based Linux distribution geared towards various information security tasks, such as Penetration Testing, Security Research, Computer Forensics, and Reverse Engineering.
The Kali Linux penetration testing platform contains a vast array of tools and utilities. From information gathering to final reporting, Kali Linux enables security and IT professionals to assess the security of their systems.
Links
https://www.kali.org/
https://www.kali.org/tools