Witch: a powerful task - and document- switcher for Mac OS X
I guess you’re all used to do Command-Tab all the time to do task-switching and, if you’re a Windows switcher, you’re still more used to the ALT-Tab keys combination.
Witch, from Peter Maurer, comes in really handy since it allows you not only to switch from one task to another, but to switch from each and every open document under every program running.
An easy way to pass from multiple open documents with the simple touch of a switch.
Witch is Universal Binary and comes for free or a donation via paypal to the author.
Check here for more info & download: http://www.petermaurer.de/nasi.php?section=witch