These sites provide comprehensive directories organized by subject. Unlike search engines which collect information by robots, the resources here have been selected by people. This offers the searcher more relevancy in the findings. These sites are excellent resources for surfing the net. If you have a good idea what you are looking for, these catalogs are the place for you.
 

A.L.A. Great Sites for Children	Argus Clearinghouse	Best Free Reference Sites
Best Information on the Net	BUBL	Ready Reference Web Sites
Digital Librarian	Virtual Reference Sites	Infomine(scholarly)
Internet Public Library	Librarian's Calendar	Librarians' Index to the Internet
Librarian's Internet Online Network	Librarian's Links	Looksmart
WWW Virtual Library	Michigan Electronic Library	Open Directory
Voice of the Shuttle	Ready Reference Subject Guide	The Mining Company
Yahoo	Electronic Reference Desk	Library Resource List
Electronic Resources	Internet Library	CyberDewey