These sites do not crawl the web themselves to build an index. Instead they allow searches to be sent to several search engines all at once. The results are then unified. They may either present results from each engine one after the other (parallel search), or blend them, removing duplicates.- Category ID : 56548
A web search mashup that combines user personalized search results from the leading search engines (Google, Yahoo! Search and Bing) and social bookmarking sites (del.icio.us).
Combined results from Google, Yahoo, Live and Altavista. The results of the different search engines are also listed for comparison. Offers local search for business.
InfoSpace product offering combined results from Google, Yahoo!, Bing, and Ask. Searches the Web or only images, video, and news. Also offers white pages, and yellow pages.
Search results clustering engine pulling data from a meta-search engine, Bing, Wikipedia and other sources. Also provides visual representations of the clusters.