When I first started programming, I didn't use a terminal multiplexer and finding tmux was a sort of revelation. I joked once on discord that "life before tmux was not life". It strikes me there are probably many other programs that I am not aware of that would be useful to know about.
I've occasionally found Luke's The Best Textbooks on Every Subject thread useful, so I thought a similar thread about software may be interesting.
Here are the rules:
- Post the name of a program for a given need.
- You must have tried at least 2 other programs designed for the same/similar class of problems.
- You must briefly name the other programs you have tried and why you think your chosen program is superior to them.
I decided to switch to Emacs 1.5 years ago, and I feel it's the most important computing decision I made since... starting to use a computer? I may write a more detailed post on what things I use Emacs for, but here I just wanted to endorse the above recommendation, including its caveats ("Don't bother with it though if you don't have some time to invest in learning it"), and emphasize that Emacs can fulfill many needs besides "code editor" (I am not a programmer myself).