I live in my terminal most of the time. I do almost all of my work in text, and cli based utilities are often far superior to their gui counterparts in terms of simplicity or features depending. Ranger is probably the greatest file browser around. Calcurse can keep a calendar and todo lists and sync via caldav. Alpine for email. It has oauth2, and can even use an external editor, like vim. It can't do html though. Neovim is great, especially with plugins like chadtree, marks, and barbar. It has spell checking, and you can install a thesaurus too. I even directly enter my billing into my database directly from cli via a script. Gui is way overrated.