It does not offer anything else other than allowing you to add new widgets from a source other than the official Apple Dashboard downloads page.
You can access the mini applications or widgets it offers through Safari, by downloading and installing them from One. If you are not, there's little in it for you, especially since all the widgets are available online, in case you ever need one. It shows you the reason why a file is locked and allows you to unlock it or kill the process responsible for locking it. It features four main views, which include a turntable with two vinyl records for scratching and mixing and plenty of sliders.