[matt2000]

Came here to recommend spectacle too. I basically only use the keyboard shortcuts to send windows to the left half, or right half of the screen. If you hit them again it does 2/3rds or 1/3rds of that side of the screen which is helpful on lower resolutions. That pretty much covers me for window management.

[TomAnthony]

Yeah - the simplicity of it, over something like this one posted, makes it much nicer. I also use for move windows to the other display.