When comparing Kali Linux vs BlackArch, the Slant community recommends BlackArch for most people. In the question“What are the best Arch Linux based distributions?” BlackArch is ranked 8th while Kali Linux is ranked 32nd. The most important reason people chose BlackArch is:
As of Feb. 26th, 2020 there are 2460 tools in the repository.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Better than ParrotOS, BackBox for hacking purpose
Contains too many tools for hacking. Those tools are not already included in BackBox or ParrotOS.
Pro Standard pentest tool set
Pro Live session distro used for forensics
Pro Large repository
As of Feb. 26th, 2020 there are 2460 tools in the repository.
Pro Better than ArchStrike
Contains many more tools than ArchStrike and far easier installation than ArchStrike
Pro Live session
You can run the OS from a LiveUSB.
Pro Arch-based
BlackArch is just normal Arch with tons of tools preinstalled
Pro Suitable for professionals
Cons
Con Not intended to be a daily driver
This distro was written for pen testing and security work. It is not meant to be a day-to-day OS (unless that's your job).
Con Very old packages
E.G. Firefox's current version is 61 but Kali linux consists of its 52th version. Though kernel is not that old.
Con Not beginner-friendly
Not great for newbies.