Encyberpedia - Electronic encyclopedia with its own content as well as over 10,000 links to the best reference sites on the Internet.
Encyclopaedia Britannica Online - Provides complete text of Encyclopaedia Britannica with search capabilities, related links, and multimedia enhancements. Full text for subscribers only; free trial available.
Encyclopedia Smithsonian - Links to on-line Smithsonian resources and answers to frequently asked questions from A to Z.
HighBeam Encyclopedia - Offers articles from the Columbia Encyclopedia and Britannica Concise Encyclopedia.
How Stuff Works - Articles explain how hundreds of things work, from elements of the human body to space-age technology.
Hutchinson Encyclopedia - "A subset of the content (concise set) is provided for free, the access to the rest of the Hutchinson Encyclopedia requires subscription."
Information Please - Online dictionary, Columbia Encyclopedia, and almanac reference.
Knol - Peer-reviewed encyclopedia from Google. Articles are written by named contributors.
MSN Encarta Encyclopedia - Includes a world atlas, dictionary, thesaurus, multimedia collection, and homework tools.
Nuttall Encyclopædia of General Knowledge - Approximately 14,000 entries on topics including art, geography, literature, philosophy, religion. Originally published in 1907.
Online Encyclopedia - Offers articles from on the 11th edition Encyclopedia Britannica, and from the Crystal Reference Encyclopedia. All articles are searchable and alphabetized.
The Probert Encyclopaedia - Reference source with several hypertext linked entries covering a broad variety of subjects.
Simple English Wikipedia - User-contributed online encyclopedia intended for people whose first language is not English.
Wikinfo - User edited encyclopedia based on Wiki software. Contains articles, information on editing, and a list of differences between this encyclopedia and Wikipedia.
Wikipedia - A free encyclopedia built collaboratively using Wiki software. (GNU Free Documentation License) and with over 1,000,000 articles. Note that because articles can be "vandalized," information on Wikipedia is not always accurate.
World Book Encyclopedia - Online version of the complete reference work along with dictionary, atlas, links, magazines, historical documents, audio, video, images, and 3D photographs. Requires free temporary registration with option to buy continued access for full articles.
Symbols.com
- An encyclopedia of over 2500 symbols. Search by keywords/concepts or by graphical attributes.
The Book of Threes - Read and contribute on the both natural and unnatural occurrences or the number three.
Creation-Evolution Encyclopedia - Over 700 printed pages of material discussing the controversy between creation and evolution.
Cyclepedia: Motorcycle Information - Motorcycling information, repair manuals, technical data, and useful statistics organized by manufacturer. Completely searchable and easy to use.
Encyclopaedia of Land Surveying Links - Alphabetical list of links to land surveying, geodesy, GPS, GIS, and related fields most specific to the Southern California Land Surveying Environment.
Encyclopedia Mythica - Over 6,000 entries on mythology, folklore, and legend. Includes some images and stories.
Encyclopedia of American Silver Marks - This site contains identification of marks of American Silver Manufacturers including Gorham, Tiffany, Towle, Duhme, Wallace, Lunt, and Watson. All marks are clearly illustrated and include a short history of each company. Links to other silver collecting sites are provided.
Encyclopedia of Life Sciences - Originally commissioned and peer reviewed articles across the life sciences. Online encyclopedia requires paid subscription.
Kyoto Encyclopedia of Genes and Genomes - Current knowledge of molecular and cellular biology in terms of the information pathways of interacting molecules or genes and links from the gene catalogs produced by genome sequencing projects.
MathWorld - Glossary of terms. Material ranges from undergraduate to research level.
Natural Remedies Encyclopedia - Natural Remedies for over 500 diseases, such as cancer, heart disease, sexually transmitted diseases, childhood diseases, with a special section on preventive health.
Peakware World Mountain Encyclopedia - Includes reference information such as height, location, first ascent data, photos, web links, summit log entries for hundreds of mountains worldwide.
The Satellite Encyclopedia - The Satellite Encyclopedia contains fact sheets with basic information such as launch date, country of origin, official identification, and payload description (EIRP maps). Extended launch vehicle section. Future satellites descriptions. Over 4000 pages and 9000 keywords.
Storm Encyclopedia - Covers the basics about severe storms with notable examples of Mother Nature's ill-tempered handiwork.
Tallship Fan - Encyclopedia of sailing ships online: data, photos, history, contact addresses and other information about traditionally rigged sailing ships.
Transformers On-Line Encyclopedia - Information on every major "continuity" for U.S., UK, and Japan Transformer cartoons and comics. Describes people, places, groups.
Virtualsources.com - Find information on every country in the world. There are massive amounts of statistics on everything from population to a country's legal system.
Help build the largest human-edited
directory on the web.