Must have commandline tools?

Ncdu is a really useful little utility that shows you what directories are using the most space on whichever drive/directory you select. Really useful little piece of software.

hdparm is another neato one that let's you test the read speeds of your drives, though it's more so something ya use once and forget exists.

Also, though Neovim is more popular, Helix deserves some recognition. It's a rust based, vim inspired text editor which removes the need to configure it, making it easier for people trying to get into terminal text editors.

Edit: Jerboa removed the first name, my bad.