The Invisible Web
About 80% of Internet content is not indexed by Google or other major search engines. Because normal search engines only cover a small part of the web, one might understand the logic in using search engines that can access the deep or "invisible" web.
Infomine
Run by the University of California-Riverside, this provides access to thousands of databases,
Voice of the Shuttle
Allows users to search a large index of humanities related topics.
The WWW Virtual Library
Started by Berners-Lee, inventor of the World Wide Web, this tool allows users to drill down by subject to narrow their search.
Complete Planet
Deep web directory. With the advanced search, you can set a date range. Claim to search over 70,000 directories.
USA.gov
Search the government, including its agencies. This is a good way to look for grants and financial assistance.
Scirus
Over 540 million scientific resources, including many journal articles.
Infomine
Run by the University of California-Riverside, this provides access to thousands of databases,
Voice of the Shuttle
Allows users to search a large index of humanities related topics.
The WWW Virtual Library
Started by Berners-Lee, inventor of the World Wide Web, this tool allows users to drill down by subject to narrow their search.
Complete Planet
Deep web directory. With the advanced search, you can set a date range. Claim to search over 70,000 directories.
USA.gov
Search the government, including its agencies. This is a good way to look for grants and financial assistance.
Scirus
Over 540 million scientific resources, including many journal articles.