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MetaCrawler was originally operating on four Digital Equipment Corporation AlphaStations [2] and processing several hundred thousand queries per day. This was starting to create significant bandwidth load at UW. It became clear that MetaCrawler needed to have some method of paying for the queries it was forwarding to the primary search engines.
They can do it either by listing results from each engine queried with no additional post-processing (Dogpile) or by analyzing the results and ranking them by their own rules (IxQuick, Metacrawler, and Vivismo). A metasearch engine can also hide the searcher's IP address from the search engines queried thus providing privacy to the search.
Infospace, Inc. was an American company that offered private label search engine, online directory, and provider of metadata feeds.The company's flagship metasearch site was Dogpile and its other notable consumer brands were WebCrawler and MetaCrawler.
Web search engines are listed in tables below for comparison purposes. The first table lists the company behind the engine, volume and ad support and identifies the nature of the software being used as free software or proprietary software.
Name Language Backend ownership Ask.com: Multilingual Google : Baidu: Chinese: Baidu : Brave Search: Multilingual Brave : Dogpile: English Metasearch engine: DuckDuckGo
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Kagi functions as a metasearch engine to aggregate search results from other established search engines with its own indexes for websites and news. [4] They run their own crawler under the brand name Teclis, [5] although this index is only used for small-web searches.
"UW Professor Oren Etzioni, inventor of Metacrawler, NetBot, and now Hamlet, is a Virtual PhD of Webology". Seattle 24x7; Tompa, Rachel (February 19, 2009). "UW Computer Scientist Oren Etzioni on Startups, Venture Capital, and the Future of Web Search". Xconomy; Wingfield, Nick (July 7, 2012).