is a utility with a single purpose: in OS X 10.7 Lion Apple introduced a new 'opening animation' for windows. This is very nice to look at the first time. And the second time. And the third time. But after some weeks it is getting boring and in addition it slows down the interaction with OS X - or much more important - one thinks it does.
With this little tool you can simply disable (and of course re-enable at any time again) this window animation. And that is all it does.
(Yes, I know you could do the same with Terminal - but there are so many people out there afraid to use it...or don't even know what the heck it is).