Off the top of my head: Nova (Panic's new code editor) and Craft are both pretty new such apps. Acorn and Pixelmator Pro are both image editors that aren't brand new, but aren't quarter-century old incumbents by any stretch. There's the whole Affinity suite of Adobe competitors. And while BBEdit is a quarter-century old incumbent, of sorts, it's pretty far from being in maintenance mode -- and it certainly has company.

It's certainly true that the center of gravity is tilting toward web apps, but not every kind of app makes a good web app, at least yet.