I use SizeUp: http://www.irradiatedsoftware.com/sizeup/ http://www.irradiatedsoftware.com/sizeup/ It's a basic snap-to-grid thing. You have commands to send a

I use SizeUp: http://www.irradiatedsoftware.com/sizeup/ http://www.irradiatedsoftware.com/sizeup/ It's a basic snap-to-grid thing. You have commands to send a window to any of the 4 quarters, 4 halves, or full screen, and to send the window to another workspace.