- Encyclopedia Mythica
 - Online encyclopedia of mythology and folklore from around the world. Includes definitions and images of many heroes, legendary creatures, gods and goddesses, and related news articles. - Stanford Encyclopedia of Philosophy
- Contains a quarterly updated, refereed resource for philosophers.
- Encyclopedia of Psychology
- Hierarchical database of links to psychology and psychology related sites.
- Encyclopedia Astronautica
- Reference source containing links to information on rockets, spacecraft, programmes, astronauts, and more.
- Canadian Encyclopedia Online, The
- Searchable full-text version. Features articles, retrospectives, interactive maps, games, and more.
- Eric Weisstein's World of Science
- Comprehensive online encyclopaedias of astronomy, math, physics, scientific biographies, and scientific books, with many equations and formulas.
- First World War Encyclopedia
- Created by teachers and students from several different countries.
- Literary Encyclopedia
- Features author biographies, text profiles, timelines, and glossary of literary terms.
- JewishEncyclopedia.com
- Features articles and pictures from the 1906 Jewish Encyclopedia. Topics include the Torah, history, literature, biography, geography, genealogy, and theology.
- Internet Encyclopedia of Philosophy
- Listings of people and topics with definitions.
- Disinfopedia
- Collaborative project to produce a directory of public relations firms, think tanks, industry-funded organisations, and industry-friendly experts that work to influence public opinion and public policy on behalf of corporations, governments and special interests.
- Catholic Encyclopedia
- Proposing to give its readers authoritative information on the cycle of Catholic interests, action, and doctrine.
- African Music Encyclopedia
- Includes profiles of artists from around the continent, and a glossary of African musical terms.
- Encyclopedia of Astronomy and Astrophysics
- Articles covering cosmology, galaxies, interstellar medium, stars, the solar system, space missions, theoretical concepts, and more. Subscription required.
- World Wide Encylcopedia of Christianity
- Quick reference to Christian history, scripture, topics, and theology. Search reference works like the Catholic Encyclopedia, Easton's or Smith's Bible Dictionaries, Torrey's Topical Textbook, and Elwell's Dictionary of Christian Theology.
- Design Encyclopedia, The
- User-built, collaborative encyclopedia of design. Learn about topics including architecture, interior design, graphic design, and the work of individual artists, or contribute a new article.
- Platonic Realms
- Math quotes, mini-texts and definitions.
- Musical Heritage Network Instrument Encyclopedia
- Search for the musical instrument of your choice or browse through the collection by the Sachs-Hornbostel classification scheme or by geographical origin.
- h2g2
- Official home of the Earth Edition of The Hitchhiker's Guide to the Galaxy. Offers an unconventional guide to life, the universe, and everything.
- Encyclopedia of the Nations
- Detailed information about 193 countries. Encyclopedia of the Nations covers population, history, culture, language, and government.
- Natural Color Diamond Encyclopedia, The
- Features images and information on hundreds of diamond colours.
- Household Cyclopedia, The
- Collection of "10,000 receipts of use in all the arts of domestic and social life." Originally published 1881.
- Conservapedia
- A conservative encyclopedia with user-created definitions and articles.
- Encyclopaedia of the Orient
- With photos and sound; specialises in North Africa and the Middle East.
- Meta-Encyclopedia of Philosophy
- indexes Dagobert D. Runes' Dictionary of Philosophy (1942).
|
