Not really software this one, but anyway. Scroogle is a Google Scraper. That means essentially you can search using Google but your search results aren't skewed by adverts and the Big Brother nature of Google (recording everything you search and storing it along with your IP address and other details it can glean) is bypassed.
According to The Register, "Google has failed to challenge the legality of the service". I wonder how long that will last for... <img src=/S/innocent.gif border=0 alt=innocent width=20 height=20>