Geniusfind
Categorizes thousands of the most useful topic-specific directories and databases, with descriptions.
Indexing the Internet
An essay by John Hubbard analyzing the question of what is the best way to index the Internet, with references.
ISEDB
A directory of search engines and directories worldwide, organized by geographical area and subject, includes articles on site submission, marketing, and optimization.
Pandia Powersearch
List of search engines and directories. Also includes a metasearch engine, search tutorial, and a free newsletter.
Search Ability
A guide to directories of specialized search engines. Each directory is reviewed and classified in some detail.
Search Engine Colossus
Directory of hundreds of search engines, organised by country and topic.
Search Engine Relationship Chart
Bruce Clay's pictoral view of how search engines provide data to partner engines and directories. Requires Acrobat Reader.
Search Engine Showdown
A user's guide to Web searching with features, comparative analysis, strategies, discussion, news and reviews.
Search Engine Watch
Danny Sullivan's comprehensive coverage of the search engine world. Forums, reviews, articles, ratings, and frequent newsletters. Paying members receive access to extra content.
Search Engine Watch
Danny Sullivan's comprehensive coverage of the search engine world. Includes submission tips, better use of search engines, reviews, and articles. [RSS]
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