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Free online dictionary and thesaurus and other vocabulary reference tools.
Free online thesaurus to help you quickly find synonyms and antonyms.
Database of over 4 million acronyms and abbreviations.
Encyclopedias , Almanacs, and Other Reference Sources
Virtual Reference Shelf
Compiled by the Library of Congress to provide links to reliable web resources; links are arranged by category to make it easier to find what you are looking for.
Claims to be the "fact Checker for the Internet"and has links to a variety of resources including calculators, weather forecasts, stock quotes, headline news, legal information, and much more.
Britannica's public website
Free online dictionary and encyclopedia with pictures, facts, and videos.
Free reference source containing: almanacs, atlas, dictionary, and encyclopedia.
General encyclopedia that can be used to obtain an overview of a topic. Users can edit the information so you should be sure to verify information found here in another source. Use the Reference and External links sections to find related information on the web that might be more authoritative.