5 great cli tools
Brendan
TLDR: https://tldr.sh/
Bat: https://github.com/sharkdp/bat
Fuzzy Finder (fzf): https://github.com/junegunn/fzf
zoxide: https://github.com/ajeetdsouza/zoxide
Disk Usage/Free: https://github.com/muesli/duf
I think I'd only seen Fuzzy Finder, but they're all pretty amazing.
Most likely most interesting to developers and CLI folks.