It's 2025, what addons are you using?

Back in college I used Anki for certain classes and that worked well. Since then, I've used Anki here and there but the problem is with sporadic usage usually there's always a new update that breaks some addons I've used before. Then it's off to see if there's an updated addon or something better and shinier.

Well, I'd like to give Anki another try because it's easier than carrying a pack of flashcards. But I'm not sure what addons have stopped working because there's another update since I last used it. Instead of going all over youtube and watching 10 hrs of videos, I thought I'd ask here first. So what addons are you using and which do you find most useful?