Parrot is a GNU/Linux distribution based on Debian Testing and designed with Security, Development, and Privacy in mind.




The best Operating System alternative to Kali Linux is Parrot Security OS, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Kali Linux and ten of them are Operating Systems so hopefully you can find a suitable replacement. Other interesting Operating System alternatives to Kali Linux are Tails, BlackArch, BackBox Linux and Trisquel.
Parrot is a GNU/Linux distribution based on Debian Testing and designed with Security, Development, and Privacy in mind.




Tails is a Debian based live CD/USB with the goal of providing complete Internet anonymity for the user.


BlackArch Linux is an Small Arch Linux iconArch Linux -based distribution for penetration testers and security researchers. The repository contains 2554 tools.




BackBox is a Linux distribution based on Ubuntu developed to perform penetration tests and security assessments. Designed to be fast, easy to use and to provide a minimal yet complete desktop environment thanks to its own software repositories...




Trisquel is a computer operating system, a GNU + Linux distribution, derived from another distribution, Ubuntu, which is derived from Debian.




KolibriOS is a tiny yet incredibly powerful and fast operating system. This power requires only a few megabyte disk space and 8MB of RAM to run. Kolibri features a rich set of applications that include word processor, image viewer, graphical editor, web browser and well over 30...




Matriux is a fully featured security distribution consisting of a bunch of powerful, open source and free tools that can be used for various purposes including, but not limited to, penetration testing, ethical hacking, system and network administration, cyber forensics...




Athena OS is an Arch-derived Linux distribution designed for penetration testing, bug-bounty hunting and InfoSec students. The distribution provides a way to connect directly to some of the e-learning hacking resources, such as Hack The Box, Offensive Security, PWNX and InfoSec...

MicroPythonOS is a lightweight, fast, and versatile operating system designed to run on microcontrollers like the ESP32 and desktop systems. With a modern Android-like touch screen UI, App Store, and Over-The-Air updates, it’s the perfect OS for innovators and developers.




Vitruvian is an operating system based on Linux, heavily inspired by BeOS, bringing the elegance and simplicity of a classic operating system to modern hardware. It leverages Linux's hardware support while maintaining the responsive, user-friendly nature of BeOS.




Parot has more security tools than Kali.