TremorSkimmer is a Dashboard widget that allows you to view all your favorite near-real-time earthquakes in widgety goodness. The information presented is from the near-real-time Earthquake Bulletin service provided by the National Earthquake Information Service (NEIS) of the U.S. Geological Survey.
Version 3.0.1: Fixed display issues in Leopard.
Mac OS X 10.4 or later
*Previously available here