Parrot Security OS is described as 'Parrot is a GNU/Linux distribution based on Debian Testing and designed with Security, Development, and Privacy in mind' and is a popular Linux Distro in the os & utilities category. There are more than 25 alternatives to Parrot Security OS for a variety of platforms, including Linux, Mac, Windows, Arch Linux and VirtualBox apps. The best Parrot Security OS alternative is Tails, which is both free and Open Source. Other great apps like Parrot Security OS are Kali Linux, Qubes OS, Whonix and BlackArch.