https://github.com/skywind3000/z.lua was another that I used for a long time, although I've lately started using https://github.com/jethrokuan/z

A lot of reinventing the wheel in the z space it seems

+1 zoxide

I actually thought the OP was about zoxide, as the latter also installs as z.

zoxide is great - in fact I tend to just alias cd to zoxide in my bashrc