tmux?
It was my first job. A small, bootstrapped startup in Bengaluru, with about 7 of us in total. That was where I heard my company’s CTO use the word “tmux”. I didn’t really care for it - all that mattered to me was the ability to run multiple shell sessions at once - and Terminator was doing its job really well. I could split tabs, rearrange them, and then post a screenshot in my instagram and generate quite a buzz among my twenty followers. And this worked for me for quite a long time. I would simply have multiple tabs open in my laptop and simply let them run in the background if necessary. If I closed a tab, I killed its process.