154 weekly downloads
Google is the world's most popular search engine. This search bar add-on utilizes SSL to protect searches between You and Google.
81 weekly downloads
*** Update: Feb 22, 2012 ***
Unfortunately, Scroogle has shut down permanently. Between Google gimping them, and a sustained DDoS, they have decided to close for good.
Moving forward, you may with to consider using Startpage or DuckDuckGo.