It REALY Just Works!
This application smoothly does the “fractions of the screen” window sizing and positioning (like the more publicized Magnet), but also lets you customize EVERYTHING, so that you can create window positioning that just suits how you work. In others words, if you’re into tweeking something until it does EXACTLY what you want, this is the app to get (or you can just use the defaults).
I’ve always used Macs (going from mainframes to workstation Unix to Mac OS) and this app has been there, doing it’s thing, for as long as I can remember being on Mac OS. I must have selected it as one point, but it’s been so many releases ago that I can’t remember not having it around. AND, It’s ALWAYS JUST WORKED!
Have-Used-App about
BetterSnapTool, v1.7