Are you tired of StuffIt Expander? This application does exactly the same as StuffIt Expander, just a little bit more. It uses the StuffIt Engine by Aladdin Systems to expand files as you can do in StuffIt Expander. It also allows you to view compressed files' contents. You can also use the little DropExpander-window to instantly expand compressed files when you need to with just a little move with the mouse.
Mac OS X 10.1 or later
*Previously available here