Kali Linux is a Debian-based distribution that ships with a collection of security and forensics tools. The project's latest version is Kali Linux 2019.4. The new release features Btrfs support during setup, a new theme, and a "Kali Undercover" mode which makes the distribution's desktop resemble the Windows desktop.
User: root
Password: toor
https://www.kali.org/
https://distrowatch.com/table.php?distribution=kali