BackBoxLinuxBackBox Linux is a penetration testing and security assessment oriented Linux distro
BlackArckLinuxBlackArch Linux is an Arch Linux-based penetration testing distribution for penetration testers and security researchers. The repository contains 1925 tools. You can install tools individually or in groups. BlackArch Linux is compatible with existing Arch installs.
KaliPenetration Testing Destribution OS
ParrotSecParrot Security Operating System is a Penetration Testing & Forensics Distro dedicated to Ethical Hackers & Cyber Security Professionals.
QubesOSQubes OS is a security-oriented operating system (OS). The OS is the software that runs all the other programs on a computer. Some examples of popular OSes are Microsoft Windows, Mac OS X, Android, and iOS. Qubes is free and open-source software (FOSS).
Samurai Web Tester FrameworkWeb Tester OS
PENTOOSPentoo is a security-focused livecd based on Gentoo
VulnhubOS with vulnerabilities for pentests
Cyborg Hawk LinuxCyborg Hawk Linux is a Ubuntu based Linux Hacking Distro also know as a Pentesting Linux Distro it is developed and designed for ethical hackers and penetration testers.
Anonym OSAnonym.OS was a Live CD operating system based on OpenBSD 3.8 with strong encryption and anonymization tools.
ArchStrikeArch GNU/Linux repository for security professionals and enthusiasts.
Network Security Toolkit (NST)Fedora-based bootable live operating system designed to provide easy access to best-of-breed open source network security applications.
BuscadorGNU/Linux virtual machine that is pre-configured for online investigators.
The Pentesters FrameworkDistro organized around the Penetration Testing Execution Standard (PTES), providing a curated collection of utilities that eliminates often unused toolchains.
AttifyOSGNU/Linux distribution focused on tools useful during Internet of Things (IoT) security assessments.
PentestBoxOpensource pre-configured portable penetration testing environment for Windows OS.
Android TamerOS for Android Security Professionals. Includes all the tools required for Android security testing.