What is "webcrawler"

WebCrawler is a metasearch engine that blends the top search results from Google Search and Yahoo! Search. WebCrawler also provides users the option to search for images, audio, video, news, yellow pages and white pages. WebCrawler is a registered trademark of InfoSpace, Inc. It went live on April 20, 1994 and was created by Brian Pinkerton at the University of Washington.