For me, that would be Secure CRT. I have yet to find a terminal emulator that matches its feature set. If you regularly manage hundreds of machines using various connection protocols (serial and ssh mostly in my case) It’s worth the $$$, and so far there hasn’t been any subscription nonsense. I liked using it at work so much I forked over the dough to have it at home.
None of the free alternatives do everything I need.
I’ll also mention a few iOS apps. One is Sun Surveyor. It’s an AR app that shows you the position of the sun, moon, and galactic center at any given time. The other would have to be Radarscope. It’s a weather radar app, but it’s a really good weather radar app.
If I’m reliant on software in order to do something (backups, accounting, etc.) I don’t want that software working to be up to the whims of some company.
Games I’m fine with because they’re art and the creators should be able to earn money from them.
Then remember to only buy indie or well unionised studio because the artists certainly don’t earn much money from big studio games.