Ask HN: What are some well-designed, but less well-known native Mac apps?

I'm familiar—as I'm sure many are—with the big names: BBEdit, Fantastical, Transmission, etc. I want to hear about great, lesser-known Mac apps, and about the design elements that made them so great.

It's fine if the app is no longer actively supported. At a time when the Mac platform seems to be shifting direction, I'm as interested in old apps as new ones.

(I suspect someone will ask what "Mac-Native" means, and I'm not particularly eager to weigh into that discussion. The apps do not need to be Mac exclusive, but they should feel highly tuned to the platform. No electron!)

Timing is one. Tracks all time on your mac and visualizes it for you. (https://timingapp.com)

2Do is another. Can't live without this app (https://www.2doapp.com)

I like Agenda.

Grapher is very well done. I used it a lot when studying calculus. https://support.apple.com/en-gb/guide/grapher/welcome/mac

Edit: I'm no longer a Mac user, I remember Coda (by Panic) being ahead of time as a text editor for coding.

Ok folks, if there is a first prize I think I’m going to win with this entry:

Scrivener