what is a good emacs package to view a directory tree?

i've tried neotree, but didn't find it that useful

is there one with nice navigation functionality?

not a directory tree browser, but for navigation within a project i find helm-projectile-find-file rather quicker than a tree browser

Treemacs?

Ranger is nice and lightweight to run and can preview files too. For a graphical file manager, Treemacs seems to be the latest favourite (replacing neotree). dird is the classic Emacs view of a directory, but doesn’t list nested directories without navigating to a new buffer. You could also open eshell and use the unix CLI command called tree