If you're on OS X there is always Amethyst [1], previous discussion [2]. I use it everyday.

On a tangent: For automation and window management (via Lua), check out the awesome Hammerspoon [3].

[1] http://ianyh.com/amethyst/ [2] https://news.ycombinator.com/item?id=8768022 [3] http://www.hammerspoon.org