Google Directory Google's human-edited directory, organizing the web into topics and categories. A joint effort of Google and the Open Directory Project.
http://directory.google.com/
AnyWho Directory Services AnyWho is a free directory service with residential, business, and government white and yellow page listings.
http://www.anywho.com/
Google Directory Searchable directory based on the ODP, combined with their own PageRank algorithm within each category.
http://www.google.com/dirhp
Yahoo! Directory Subject-based directory listing web sites in a wide range of topics, from arts, entertainment, and society and culture, to science, education, and health.
http://dir.yahoo.com/
Switchboard White page and yellow page directory for finding nationwide residential and business phone numbers and addresses.
http://www.switchboard.com/
WhitePages.com Find email addresses, phone numbers, and area and zip codes for people and businesses.
YellowPages.com Business phone number directory, searchable by city, state, business name, and type of business. Also includes international yellow pages.
