Biology - Environment - Medicine

• Botany Encyclopedia of Plants and Botanical Dictionary
• EcoCyc: Encyclopedia of E. coli Genes and Metabolism
• The Encyclopedia of Life Support Systems
• HinCyc: Encyclopedia of Haemophilus Influenzae Genes and Metabolism
• NYMF Encyclopedia 
• The Animal Diversity Web 
• Human Anatomy Online 
• World Encyclopedia
  

Crafts - Hobbies - Sports- Home

 

• Sports Almanac  
• SportsPedia Home Page 
• Chess Encyclopedia 
• Encyclopedia of Sports Medicine and Science 
• Hobbies and Recreation refdesk.com 
• Bushido Martial Arts Encyclopedia 

Art- Cultures - Geography - History

 

• The Artchive 
• Artcyclopedia
• Encyclopedia of British History: 1700-1930
• Encyclopedia of the First World War
  The Second World War Encyclopaedia
• Encyclopedia of the Orient
• African Music Encyclopedia 
• Cambridge History of English and American Literature
• Encyclopedia of Western Signs and Ideograms
• Ethnologue (Languages of the World)
• Great Buildings Collection 
• The Human Languages Page 
• HyperHistory 
• World Art Treasures 
• The Canadian Encyclopedia
• Encyclopedia of Conspiracies

Economics - Finance-Education

• International Financial Encyclopedia

General Knowledge

 

• Encyclopedia Britannica Online
• Grolier Multimedia Encyclopedia Online
• Click Here For More

Internet

• Free Internet Encyclopedia
• Virus Encyclopedia

 

Mathematics - Computing

 

• CVonline: The Evolving, Distributed, Non-Proprietary, On-Line Compendium of Computer Vision
• Edinburgh Online Graphics Dictionary
• EDIS: Encyclopedia of Delay-Insensitive Systems
• Sloane's On-Line Encyclopedia of Integer Sequences
• Instrument Encyclopedia
• TechEncyclopedia 

Mysticism - Mythology- Literature

 

• The Encyclopedia Mythica

  Philosophy

   

• The Internet Encyclopedia of Philosopy
• Stanford Encyclopedia of Philosopy

 

Physics - Cosmology

 

• Physics Encyclopedia
• Views of the Solar System 
• The Nine Planets 
• Encyclopedia Astronautica

 

Religion

 

• The Catholic Encyclopedia
• A Shi'ite Encyclopedia

Social Sciences

 

• Encyclopedia of Violence, Peace, and Conflict (not on-line)