Quoted: KartOO is a metasearch engine with visual display interfaces. When you click on OK, KartOO launches the query to a set of search engines, gathers the results, compiles them and represents them in a series of interactive maps through a proprietary algorithm.
Usually, search engines only cover a small part of the web, around 20% for the most effective ones. KartOO technology is a metacrawler, that is a search tool which summarizes the results of various search engines. Therefore, it covers the exact proportion corresponding to the combination of the engine indexes. KartOO's search capacity is slightly superior to that of a standard search engine though there cannot be any wonderful results: the various search engines have a lot of their pages in common and combining the various results does not give you such a wide coverage of the information available online, especially as far as the famous invisible web is concerned.