Deerfield High School Library

• Google - Has the largest database of all search tools. Has advanced searching, image searching and a directory.
• Google Scholar - Google Scholar that lets you search "specifically for scholarly literature, including peer-reviewed papers, theses, books, preprints, abstracts and technical reports from all broad areas of research." 
• Vivisimo - Founded In June 2000 by Carnegie Mellon University research computer scientists, this metasearch engine's strength is its "clustering" feature which categorizes sites into folders.
• Internet Search Wizard - Metasearch engine developed by the Illinois Math and Science Academy and has an ads-free interface.  Searches by domain, date and language.
• Teoma - Created by a team of scientists from Rutgers University.  Ranks ranks sites based on the number of same-subject pages that reference Them.  Gives not only results but also has suggestion for refining searches and gives link collections from experts and enthusiasts.
• Dogpile - Meta-search engine that searches the Internet's top search engines such as About, Ask Jeeves, FAST, FindWhat, Google, LookSmart, Overture and many more.
  
  

Invisible Web Search Engines
"The Invisible Web," which is largely comprised of content-rich databases from universities, libraries, associations, businesses, and government agencies around the world cannot be accessed through the above search engines.

• Librarians' Index to the Internet - a searchable directory of free Internet sites evaluated by librarians.
• The Invisible Web Directory
• The Complete Planet
• Highbeam Research
• Beaucoup
• IncyWincy (includes metasearch tool)
• GeniusFind (hundreds of databases organized by topic)
• The Educator's Reference Desk (resource guides, lesson plans, search tools)
• Library of Congress (over 10 million primary sources for educators)