Mine is abit of a cheat since its for iOS/Mac/iPad but MoneyStats. It does balance forecasting and unlike Kualto/Dollarbird/other balance forecasting apps, you can actually buy it. No subscriptions please.
Spectacle, it adds shortcuts to snap windows to half of the screen and stuff like that. I really like it. Also, DaisyDisk helps me a lot when looking for stuff taking much storage.