Kali has it all if you want a pre-made networkhacking distribution. It has an impressive number K of editions to cover most installation scenarios, plus a slick-looking lightweight desktop and a huge set of built-in, well-categorised hacking tools. It also benefits from being the most popular hacking distro, so there are plenty of tutorials and many penetration-testing tool tutorials use Kali as a base. We suspect that the average Linux user could have Kali installed and be following a penetration tutorial within a morning if they already have some experience with networking tools.
Parrot OS gives Kali a run for its money in most aspects as it features a stylish desktop, a comprehensive set of built-in tools and a decent variety of installation editions, too. For beginners, it’s worth considering that it runs on a Debian base, like many popular Linux distros.