• BAMBOO WEB ENCYCLOPEDIA
• BRITANNICA ENCYCLOPEDIA
• COLUMBIA ENCYCLOPEDIA 6th edition (also see Fact Monster) complete contents of the year 2000 publication of the largest one-volume general encyclopedia available
• ENCARTA ENCYCLOPEDIA 
• ENCYCLOPEDIA.COM searches magazine articles provides more than 17,000 short articles from the Concise Columbia Electronic Encylopedia, Third Edition.
• ENCYCLOPEDIA OF LIFE SCIENCES ELS has both a 20-volume print edition and an online edition. The online edition was launched in April 2004,
• ENCYCLOZINE hybrid portal and online encyclopedia
• FACTS ENCYCLOPEDIA extensive links organized into categories
• ENCYBERPEDIA an information portal
• ENCYCLOPEDIA at THEFREEDICTIONARY 
• Encyclopedia Frobozzica
• The Free Internet Encyclopedia 
• INFORMATION PLEASE ENCYCLOPEDIA
• INFORMATION SPHERE 
• INTERNET ENCYCLOPEDIA information organized by a pre-established collection of subject titles and names. (home page)
• Kidopedia A global children's encyclopedia written "by kids for kids".
• PROBERT ENCYCLOPEDIA  A free encyclopedia dictionary of over 115,000 hyperlinked and searchable topics
• WIKIPEDIA ENCYCLOPEDIA (english version; other language versions available)
• YAHOO ENCYCLOPEDIA

ALMANACS

• INFORMATION PLEASE ALMANAC

REGIONAL ENCYCLOPEDIAS

• CANADIAN ENCYCLOPEDIA comprehensive authoritative source of information on all things Canadian.

• ENCYCLOPEDIA OF THE ORIENT focusing on North Africa and the Middle East.

SPECIALIZED ENCYCLOPEDIAS

• AUTOPEDIA  automotive related information

• Encyclopedia of Percussion

• Encyclopedia of Women's History

• EOLSS: ENCYCLOPEDIA OF LIFE SUPPORT SYSTEMS  integrated compendium of sixteen encyclopedias.

• HOUSEHOLD CYCLOPEDIA  

• International Financial Encyclopedia

• Perseus Encyclopedia

• Shi'ite Encyclopedia

• Glossary of Pregnancy Terms

• Pregnancy Encyclopedia

• INTERNET ENCYCLOPEDIA OF PHILOSOPHY

• STANFORD ENCYCLOPEDIA OF PHILOSOPHY / Stanford Encyclopedia of Philosophy

ATLAPEDIA ONLINE
BRITANNICA
DUHAIMES LAW DICTIONARY
ENCARTA ONLINE
ENCYBERPEDIA
ENCYCLOPEDIA.COM
ENCYPERDIEA MASSIVE LINKS
FUNK AND WAGNALLS
INVESTORWORDS
LETSFINDOUT CHILDREN'S ENCYCLOPEDIA
LEXICORIENT ENCYCLOPEDIA OF ORIENT
TECH ENCYCLOPEDIA