Those familiar with similar apps will find Spectacle to be a simple and unobtrusive way to become more productive while using your Mac. Using Spectacle you can view multiple documents side-by-side, move windows to other displays, or even focus your full attention to a single task.
As of July 2011 development and support of Disco have been officially discontinued. Disco will remain downloadable by any one who wishes to use it. The following fully free license code and name will remain available for everyone to use:
Name: FREE DISCO