Kubuntu vs BackBox Linux opinions
Kubuntu is a regular desktop no pen testing tools. No forensics no nothing but what a boring distro has.
Kali Linux is a Debian-derived Linux distribution designed for digital forensics and penetration testing, originally forked from Backtrack Linux by the Offensive Security team.
Parrot is a GNU/Linux distribution based on Debian Testing and designed with Security, Development, and Privacy in mind.
BlackArch Linux is an Small Arch Linux iconArch Linux -based distribution for penetration testers and security researchers. The repository contains 2554 tools.
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...Discontinued
The project seems to be no longer developed. Last version, Matriux Blue, released in August 2014, can be still downloaded from SourceForge
The most advanced, powerful and yet beautiful penetration testing distribution ever created.Lined up with ultimate collection of tools for pro Ethical Hackers and Cyber Security Experts.
have not been any updates on their website in almost 2 years.
Cyborg Linux vs BackBox Linux opinions
Cyborg Linux project was managed in a way that penetration tester can utilize it in the best possible way.