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.
EDIT:
This one’s debatable, but I use it all the time. Plasticity is 3D modelling software that attempts to bridge the gap between practical CAD programs and software meant for 3D artists like Blender. It’s not cheap considering Blender is free, but it’s buy once use forever, and at (I think) $150 it’s within reach of an individual hobbyist who knows what they want and is willing to pay for it.
Their subscription model is nice. You will always own the last version you got with your subscription. You just won’t get new versions until you resub.
Oh, this is good to know. But then, why not pay $20 once and stop paying until the next version is out? Can you do that?
Because if you keep the subscription, the payment is lower (don’t remember, how much lower, half or less), and versions come more often than once a year
It might make sense if you only re-subscribe if something really big changes, which is almost never, I guess
But if big changes occur almost never, why pay for a subscription?
Originally I paid because I wanted to support the product, now the product is not as great as it used to be, so maybe there is none
I don’t actually know.