News and feature lists of Linux and BSD distributions.
https://distrowatch.com
BlackArch Linux is a lightweight expansion to Arch Linux for penetration testers.
https://blackarch.org
BackBox is more than an operating system, it is a Free Open Source Community Project with the aim of promoting the culture of security in IT environment and give its contribution to make it better and safer.
https://www.backbox.org
The distro is for penetration testing and ethical hacking and also privacy, hardened, secure, anonymized Linux. Predator Linux is based on Ubuntu 20.04 LTS Mini, kernel 5.10 LTS, and using a fully customized xfce4 lightweight desktop with a special menu of tools. Predator Linux has around 1300 pre-installed tools which are split into 40 several categories
https://predator-os.ir
Welcome to TSURUGI Linux world a DFIR open source distribution to perform your digital forensics analysis and for educational purposes
https://tsurugi-linux.org
The Fedora Security Lab provides a safe test environment to work on security auditing, forensics, system rescue and teaching security testing methodologies in universities and other organizations.
https://labs.fedoraproject.org/security
Qubes is a security-oriented, free and open-source operating system for personal computers that allows you to securely compartmentalize your digital life.
https://www.qubes-os.org
Home of Kali Linux, an Advanced Penetration Testing Linux distribution used for Penetration Testing, Ethical Hacking and network security assessments.
https://www.kali.org
Tails is a portable operating system that protects against surveillance and censorship.
https://tails.net