Index Google
Encyclopedia aggregator and one-stop-shop for academic information. - Aggregator  
Featuring 100,000 scholarly articles. Highly respected. - Encyclopedia  
Catholic Encyclopedia  
10,000 articles on Catholic history, interests, and doctrine. - Religion  
Columbia's online encyclopedia offers 51,000 entries (and pop-up ads). - Encyclopedia  
Computer Desktop Encyclopedia  
Featuring 20,000 topics and 2,500 images. Search field at bottom of page. - Computers  
Encyclopedia Mythica
Encyclopedia Mythica
Premier encyclopedia covering mythology, folklore, and religion. - Mythology  
Encyclopedia of Life  
Database of scientific information on and photographs of known species. - Biology  
Encyclopedia of Philosophy  
Hundreds of original contributions by philosophy experts and volunteers. - Philosophy  
Encyclopedia of Symbols  
2,500 western signs and ideograms grouped by graphic characteristics. - Symbols  
Encyclopedia Smithsonian  
Online resources from the Smithsonian Institution. - Encyclopedia  
Digital collection of scientific and cultural texts, images, videos, and sounds.  
Open database of the world's information. - Encyclopedia  
How Stuff Works  
Source for easy-to-understand explanations of how things work. - Science  
Medline Medical Encyclopedia (by ADAM)  
Diseases, symptoms, injuries, and more with photographs and illustrations. - Medical Encyclopedia  
Encyclopedia aggregator. Sources include Columbia Encyclopedia and Wikipedia. - Information Aggregator  
Peer-reviewed open-access encyclopedia written by scholars from around the world.  
Stanford Encyclopedia of Philosophy  
Hundreds of refereed encyclopedia entries. - Philosophy  
Encyclopedia of more than 3,000 famous people and fictional characters. - Famous People  
Find more than 2,000,000 entries, written and edited by users. - Encyclopedia  
World Book  
Traditional encyclopedia in print since 1917. Subscription required. - Encyclopedia  
World Digital Library  
Archive of primary materials from cultures around the world. - Encyclopedia