Move and resize windows with the keyboard.
FromDEVONtechnologies:You love working with many windows open but you are using the keyboard much more often than the mouse? Grid moves and resizes your windows with a single keystroke. Choose your grid and have everything nicely aligned.
"Snap" windows to corners or sides of the screen.
Hover over the Dock for window previews and enables window snap.
Extend the Dock and get window previews whenever you hover your mouse over an app.