refdesk.com – Meta-reference center providing links to top search engines, dictionaries, headline news, stock quotes, encyclopedias, translators, biographies, calendars, census and demographic information, weather, newspapers, magazines, maps, writing guides, subject categories, genealogy sites, quotation sources, and more
iTools – Search tools for languages (including dictionary, thesaurus, and translator), geography, finances (including currency converters and stock market information), shipping and mailing, and email discussion groups
Internet Public Library – Ready Reference Resources available in many subject areas including Business, Economics, Computer and the Internet, Education, Entertainment and Leisure, Health and Medical Sciences, Arts and Humanities, Law, Government, Political Science, Regional and Country Information, Science, Technology, and Social Sciences. Information also available on associations, Native American authors, and literary criticism. Over 15,000 monograph texts available online, as well as many newspapers and other serials. Special reference areas directed towards the needs of youth and teens.
YAHOO Reference Directory – Metasearch tool providing links to web pages for varied subjects, including acronyms, abbreviations, almanacs, arts and humanities, bibliographies, booksellers, calendars, country profiles, dictionaries, directories, encyclopedias, environment and nature, etiquette, finance and investment, flags, geography, health, journals, libraries, maps, measurements and units, music, parliamentary procedure, patents, phone numbers and addresses, postal information, quotations, research papers, statistics, thesauri, time, web searching