Looks neat, albeit for me personally it might be a little over the top.

I use Moom (http://manytricks.com/moom/) for quite a while and I'm happy with it so far as it integrates perfectly into the overall UI of OSX.

You have of course also convenient (and customizable) shortcuts for actions like 'Move & Zoom Window to Left Half', which is quite handy for example for webdevelopment on a smaller screen (Macbook), where you might want your browser to occupy one half and your editor the other half of the screen.