General Search Engines
Bing: A search engine created by Microsoft which features image and video searching as well as instant answering to selected questions.
DuckDuckGo and Ixquick: Ixquick and DuckDuckGo focus on protecting user privacy. They claim to not record user IP addresses or share any personal data with third parties.
Google: Features a wide array of search features including image and video searching, book searching, Google Scholar and more.
Discovery Engines
Million Short: Experimental search engine that encourages discovery of sites that don't normally rank at the top of most other search engine results by permitting you to remove the top million, hundred thousand, ten thousand, thousand or hundred sites from the results set.
Meta Search Engines
Meta search engines use a single search interface to return results from more than one search engine.
Dogpile: Reviews search results from Bing, Google and Yahoo, attempts to select the most relevant results, removes duplicates and presents you the results.
MetaCrawler: Combines the top search results from a variety of popular search engines including Bing, Google, and Ask.
