Great utility for any power user.

Divvy sped up my workflow tremendously. I setup a ton of keyboard shortcuts allowing me to manage my windows like a pro. Also, if you have multiple monitors, you can repeatedly press your shortcut keys, and Divvy will automatically move your current window to other monitors. It’s really nice.

There is one little bug since Mavericks. When I plug in my secondary and tertiary monitors after Divvy has already started, I must restart Divvy before it will recognize all three monitors and quick switch between them all.

jpdesigndev about Divvy - Window Manager