[OuterVale]

A clone of fsn, fsv (File System Visualizer) is available and works on modern Linux.

Quite a fun little tool to visualise your storage.

https://fsv.sourceforge.net/

https://en.wikipedia.org/wiki/File_System_Visualizer

[rafaehlers]

I just vibe-coded a loosely inspired version using WebGL with GPT 5.6 Sol available here https://github.com/rafaehlers/fsn