[jcynix]

What's wrong with dired mode? Ok, you'll get each directory in its own buffer. But, thinking of that, it shouldn't be to hard to make dired mode recurse into subdirectories inside the same buffer. (And fold/unfold like orgmode does. ;-)

[natrys]

It's a single variable setting now:

https://www.manueluberti.eu/emacs/2021/07/14/dired/

[thom]

dired-subtree does this, albeit on demand, not eagerly descending into subdirectories. dired-hacks more generally has lots of good stuff like filtering etc.