I've been using macOS for a bit more than 10 years now (since Snow Leopard maybe) It has so many apps & tools which is very useful and some not available in any other platforms. I have a MacBook Pro from my work and a machine with Hackintosh installed.
I maintain my apps on both machines with my laptop script.
API & programming languages documentation browser. Saves me quite some time googling. Works offline.
A better terminal. The latest version (3.3) also introduce Python API so it should have many useful plugins in the future.
I apply my Pomodoro Technique with this app. What I like is it can block your whole screen with an overlay which is customizable.
My code editor of choice, I switched from Sublime Text for quite some time now. Speed is not better but good enough.