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The Deep and Hidden Web

Internet Search Engine Groupings

The Major Internet Search Engines

The Meta Crawlers and Bots

Academic and Scholarly Search Engines

Open Access Portals and Scholarly Repositories

News, RSS and Blog Search Engines

Audio, Video and Podcasting Search Engines

The Deep and Hidden Web

Government Information Portals and Search Engines

Search engines which index the so called "deep" or "hidden" Web search out Web pages which may not normally be found though regular major search engines. Material of this type may include searchable PDF files, company intranet sites, digital tables of contents and searchable, but proprietary, databases. You may also find the elusive conference paper in one of these search engines.

completeplanet iconComplete Planet 

Complete Planet searches across 70,00 searchable databases and specialty search engines.

Infomine iconInfomine 

Hosted by the University of California, Infomine is a search engine which specializes in scholarly databases.