I second the Spectacle recommendation, but it is frustrating that you have to download an APP to do something that should be built into the window manager.

for top-level activities that won't really be composed with anything else, it seems fine to leave it to app developers;

as long as someone does the job correctly

Yeah, there have been many many iterations of these apps, by different developers. SizeUp + Cinch, Divvy, Spectacles.

While I think that Apple should have just copied Microsoft's approach (i.e. what Cinch does) the wealth of options for window management means that everybody can find something that they like.

I've found Spectacle leaves a bit of padding space under where the dock folds out - potentially useful, but unwanted in my case, and I wasn't able to find a setting to change that behaviour.

I use BetterSnapTool instead, which seems to have a better collection of settings and solves my (admittedly minor) gripe with Spectacle.

Spectacle is great, but am I the only one who has to restart it periodically when it stops responding to keyboard shortcuts?

Obviously YMMV but I've been using Spectacle for years and have never had to do this.

Spectacle is EXACTLY what I was looking for. Thank you!