There are a couple of mac apps I use that get you most of the way there: MercuryMover - lets you move windows and resize them to preset positions with hotkeys

There are a couple of mac apps I use that get you most of the way there: MercuryMover - lets you move windows and resize them to preset positions with hotkeys (left half of screen, top half of screen, etc.) MondoMouse - adds hotkeys that allow you to drag or resize a window from any position