A few from the top of my head:

• git
• neovim
• nix (package manager)
• mpv + yt-dlp (stream music from yt with --no-video argument)
• unbound
• caddy (quickly spin up local web servers with https)

Edit: almost forgot, I've been using zsh + znap package manager and loving it.

There are wrappers for mpv that provide a more "full" GUI including settings, but mpv itself is more hotkey and config focused. You can do a lot of cool stuff using profiles and scripts. I get it if having docs open to configure a media player isn't your cup of tea, tho.

Some of the wrapper built on mpv are mpv.net, iina, and gnome-mpv.

Yeah, it's pretty easy on macos using configuration profiles

Please, sir, do the needful