[jwells89]

> They copied it a little bit, but it's very mouse oriented (option-click the green zoom button to snap windows to left/right).

Moom, which is the tool I prefer, similarly shows a popover when hovering over the green button.

Personally I prefer this sort of approach and wish it could be replicated on other OSes. The Aero Snap way of doing things with the noisy “should I snap here” animations are annoying and too easy to accidentally trigger.