- Dictionary.com - Access easy-to-use dictionaries, including medical and language and a thesaurus, along with links to essential reference materials.
- HyperDictionary.com - Online Dictionaries:
- KSVN's English-Vietnamese Dictionary
- Merriam-Webster Online - Dictionary, Thesaurus, Word of the Day, Word Games, Word for the Wise.
- NetLingo Dictionary of Internet Words - A Glossary of Online Jargon with Definitions of Terminology & Acronyms.
- The New Hacker's Dictionary
- WordCentral.com - Dictionary, Daily Buzzword, Word games, Merriam-Webster, Student Dictionary, Build your own Dictionary.
- Britannica.com - with hundreds of thousands of articles, biographies, videos, images, and web sites.
- Catholic Encyclopedia - the most comprehensive resource on Catholic teaching, history, and information ever gathered in all of human history.
- Columbia Encyclopedia, 6th Edition. 2001
- E-Conflict World Encyclopedia - Country information from around the world. Resource for Business, Tourists, Students or Teachers.
- Encyclopedia.com - from Electric Library.
- Infoplease - Encyclopedia, Almanac, Atlas, Biographies, Dictionary, Thesaurus. Free online reference, research, & homework help.
- Medline Plus: Medical Encyclopedia - includes over 4,000 articles about diseases, tests, symptoms, injuries, and surgeries. It also contains an extensive library of medical photographs and illustrations.
- MSN Encarta - Encyclopedia, Dictionary, Atlas, and Homework
- Wikipedia - the free encyclopedia that anyone can edit.