Also known as a mutibuscador or metacrawler. It is a multiple search engine that has special search robots and searches several search engines at the same time. A metasearch engine can be general: ex. www.dogpile.com searches Google, Yahoo, Ask Jeeves and other search engines at the same time and displays the most relevant results of each in a single search. There are also metasearch engines by subject, by region, by country etc. For example, a metasearch engine that searches by country can search several regional search engines in the same country at the same time.