If you like to keep a tidy phone (or keep people out of your business), History Eraser Pro makes short work of cleaning out your Android device’s cache files.
Rather than dig through various menus and try to figure out how to clean out each individual cache, History Eraser Pro puts everything in a neat dashboard for easy cache wiping. Fire it up, select what you want to dump (like your call history, browsing history, and more) and wipe it away.
Despite the Pro in the name, History Eraser Pro is a free application–Android 1.5+ required.
History Eraser Pro [Android Market via Addictive Tips]