Ask HN: What are your "Must Have" utility apps on macOS?

I finally bought in to the apple m-series hype and picked up an M1 Pro Macbook Pro refurbished.

It seems like everyone has a load of different utility and QOL apps that they use to help make MacOS more usable for them.

What are your go-tos, and how do you make use of third party MacOS apps and tweaks day to day?