Beaucoup Search Engines (http://www.beaucoup.com/)
Is this a search engine or an Internet directory? Do a search for a topic and decide for yourself. You're sure to be impressed by the amount and quality of the results. 
               

INFOMINE (http://lib-www.ucr.edu)  - an excellent virtual library and reference tool containing highly useful Internet/Web resources including databases, electronic journals, electronic books, bulletin boards,  listservs, online library card catalogs, articles and directories of researchers, among many other types of information. Over 20 University of California, California State University, and other university and college librarians have contributed to building INFOMINE. 

Internet Public Library (http://www.ipl.org/)
Just like a real library. It even offers storytime! 

Librarians' Index to the Internet (http://www.lii.org/)
This site includes links researched and approved by librarians from all over California. 

World Wide Web Virtual Library (http://www.w3.org/vl) The VL is the oldest catalog of the web, started by Tim Berners-Lee, the creator of html and the web. Even though it isn't the biggest index of the web, the VL pages are widely recognized as being among the highest quality guides to particular sections of the web.