Meta Search Engine

Meta-search engines is a search engine that sends user requirement to several other search engines and/or databases and combines the results into a single list or present   them according to their font . Metasearch engines permit users to enter search criteria once and access several search engines simultaneously. Metasearch engines activate on the idea that the Web is too large for any one-search engine to guide it all and that more complete search results can be obtained by merging the results from several search engines. This also may save the user from having to use multiple search engines separately.