List of online encyclopedias


This is a list of well-known online encyclopedias that are currently accessible or were formerly accessible on the Internet.
The largest online encyclopedias are general reference works, though there are also many specialized ones. Some online encyclopedias are editions of a print encyclopedia, such as Encyclopædia Britannica, whereas others originated online, such as Wikipedia. Some online encyclopedia use Wikipedia's MediaWiki software or even fork Wikipedia content to create an alternative version.

Regional interest

US-specific

SiteLanguageDescriptionAccess
64 ParishesEnglishOnline encyclopedia of Louisiana, run by the Louisiana Endowment for the Humanities.Free
Encyclopedia of AlabamaEnglishEncyclopedia covering the state of Alabama, sponsored by the Alabama Humanities Foundation.Free
Encyclopedia of AppalachiaEnglishDedicated to the region, people, culture, history, and geography of Appalachia.Defunct
Encyclopedia of ArkansasEnglishProject of the Central Arkansas Library System and is the only U.S. state encyclopedia sponsored by a public libraryFree
Encyclopedia of ChicagoEnglishFree
Encyclopedia VirginiaEnglishEncyclopedia funded by the Virginia Foundation for the Humanities and Library of Virginia, covering topics on VirginiaFree
Handbook of TexasEnglishArticles on the U.S. State of TexasFree
HistoryLinkEnglishArticles about Washington state historyFree
MNopediaEnglishOnline encyclopedia about Minnesota, published by the Minnesota Historical Society.Free
NCPediaEnglishEncyclopedia coordinated and managed by the North Carolina Government and State Library of North Carolina, covering a broad spectrum of topics and resources about North Carolina.Free
New Georgia EncyclopediaEnglishArticles on the U.S. state GeorgiaFree
The Oregon EncyclopediaEnglishArticles about OregonFree
Tennessee EncyclopediaEnglishCovers the state of TennesseeFree

Philosophy

Science and technology

Medical

SiteLanguageDescriptionAccess
GanfydEnglishOnline medical wikiDefunct
RadiopaediaEnglishArticles on medical imaging used in radiology and radiographyFree
WikEMEnglishAn emergency medicine open-access sourceFree