List of online encyclopedias

This is a list of online encyclopedias—i.e., encyclopedias accessible on the Internet or formerly accessible on the Internet. The largest online encyclopedias are general reference works, though there are also many specialized ones. Some online encyclopedia are an online edition of a print encyclopedia, whereas others are a separate enterprise entirely, such as Wikipedia.

## Contents

* 1 General reference
* 2 Biography
* 3 Antiquities, arts, and literature
* 4 Regional interest
* 4.1 US-American specific
* 5 Pop culture and fiction
* 6 Mathematics
* 7 Media
* 8 Philosophy
* 9 Politics, law, and history
* 10 Religion and theology
* 11 Science and technology
* 11.1 Life sciences
* 11.2 Medical
* 12 See also
* 13 References

## General reference

Name  | Language  | Description  | Status  | Access  | Content license  | Fork of  | Merged with

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Wikipedia | Various (see list here)  | General interest, wiki | Active  | Free  | CC BY SA 3.0, GFDL  | None  | None
HandWiki | English | Science, Computing  | Active  | Free  | CC BY SA 3.0, GFDL and other  | None  | None
Nupedia | English | Combined with GNUpedia  | Defunct  | None  | Unkown  | None  | None
Interpedia | English | General interest, the first site to propose a free encyclopedia written by users  | Defunct  | None  | Unkown  | None  | None
Everipedia | English[1] | The site lets editors create any page on any topic[1] and anyone can edit a page by creating a free account.[2] | Active  | Free[2] | CC BY 4.0  | Wikipedia  | None
Citizendium | English  | General interest, wiki | Active  | Free, copyleft | CC BY SA 3.0, GFDL 1.2  | None  | None
Conservapedia[3][4] | English  | American conservative and Christian interests  | Active  | Free  | Unkown  | None  | None
Scholarpedia | English  | Articles are written by scholars and peer-reviewed for accuracy  | Active  | Free  | CC BY NC SA 3.0  | None  | None
Encyclopædia Britannica | English | General interest  | Active  | Limited free access and features, subscription for full access  | Unkown  | None  | None
Baidu Baike  | Chinese | Collaborative online encyclopedia hosted by the major Chinese search engine Baidu | Active  | Free  | Unkown  | None  | None
Enciklopedio Kalblanda | Esperanto  | General interest. The first online encyclopedia on the Esperanto | Defunct  | None  | CC BY SA 3.0, GFDL  | None  | Wikipedia in Esperanto
EcuRed | Spanish  | General interest. Cuban  | Active  | Free  | None  | None  | None
Encyclopedia.com | English  | General interest  | Active  | Free  | None  | None  | None
Baike.com  | Chinese | General interest. China's largest wiki  | Active  | Free  | Unkown  | None  | None
Columbia Encyclopedia | English  | General interest  | Active  | Free[5] | Unkown  | None  | None
Crnogorska Enciklopedija | Montenegrin  | General interest (hopes to encourage a Montenegrin language Wikipedia)  | Defunct  | None  | Unkown  | None  | None
Croatian Encyclopedia | Croatian  | General and national encyclopedia  | Active  | Free  | Unkown  | None  | None
Den Store Danske Encyklopædi | Danish | General interest  | Active  | Free  | Unkown  | None  | None
Digital Universe | English  | Collection of articles on educational, cultural, and scientific topics  | Active  | Free  | Unkown  | None  | None
Doosan Encyclopedia | Korean | General interest  | Active  | Free  | Unkown  | None  | None
Ekşi Sözlük  | Turkish | General interest  | Active  | Free  | Unkown  | None  | None
Encarta (1993–2009)  | English  | General interest  | Defunct  | None  | Unkown  | None  | None
Enciclonet | Spanish  | General interest  | Active  | Limited free access and features, subscription for full access  | None  | None  | None
Encyclopædia Britannica 11th Edition (1910–11)  | English  | General interest  | Defunct  | Public domain: completely free access from several online sources  | None  | None  | None
Encyclopedia of China | Chinese  | General interest  | Active  | Subscription  | Unkown  | None  | None
Encyclopedic Dictionary of Vietnam | Vietnamese | General interest. State-sponsored encyclopedia.  | Active  | Free  | Unkown  | None  | None
Encyklopedia Internautica | Polish | General interest  | Active  | Free  | Unkown  | None  | None
Enciclopedia Libre Universal en Español | Spanish | Fork of the Spanish Wikipedia, using wiki software, released under the GFDL | Active  | Free, copyleft | Unkown  | None  | None
Encyclopædia Universalis | French | General interest encyclopedia published by Encyclopædia Britannica | Active  | Subscription  | Unkown  | None  | None
Everything2 | English  | General interest, users can submit articles on the topic of essentially anything  | Active  | Free  | None  | None  | None
The Free Dictionary | English, Spanish, German, French, Italian, Chinese, Portuguese, Dutch, Norwegian, Greek, Arabic, Polish, Turkish, Russian  | TheFreeDictionary's Encyclopedia draws from various sources, including The Columbia Encyclopedia.  | Active  | Free  | None  | None  | None
GNE | English  | General interest articles are released under a GNU license. Formerly GNUpedia.  | Defunct  | None  | Unkown  | None  | None
Gran Enciclopèdia Catalana | Catalan | General interest  | Active  | Free  | Unkown  | None  | None
Grand Larousse encyclopédique | French  | General interest  | Active  | Free  | None  | None  | None
Great Norwegian Encyclopedia | Norwegian (Bokmål)  | General interest  | Active  | Free  | Unkown  | None  | None
Great Russian Encyclopedia | Russian  | General interest  | Active  | Free  | Unkown  | None  | None
Great Soviet Encyclopedia | Russian, English  | General interest, often from the former official Soviet viewpoint.  | Active  | Free  | Unkown  | None  | None
Hamichlol | Hebrew, English  | General interest, designed for Haredim  | Active  | Free. Copyleft: mirror of Wikipedia content; copyright: original content.  | Unkown  | Wikipedia  | None
Internetowa encyklopedia PWN | Polish | General interest  | Active  | Free  | Unkown  | None  | None
Krugosvet (Rus. Кругосвет)  | Russian | General interest.  | Active  | Free  | Unkown  | None  | None
Marathi Vishwakosh | Marathi | General Interest  | Active  | Free  | Unkown  | None  | None
Marefa | Arabic  | General interest  | Active  | Free  | Unkown  | None  | None
Mawdoo3 | Arabic  | General interest  | Active  | Free  | Unkown  | None  | None
Metapedia | Hungarian, German, English, Spanish, Swedish, Romanian, Estonian, French, Slovenian, Czech, Portuguese, Norwegian, Danish, Greek, Dutch | Far right-wing, white nationalist and neo nazi encyclopedia[6][7][8][9][10][11] | Active  | Free  | Unkown  | None  | None
Meyers Konversations-Lexikon 4. ed. 1888 - 1892  | German  | General interest  | Active  | Free  | Unkown  | None  | None
Nationalencyklopedin | Swedish | General interest, comprehensive  | Active  | Subscription  | Unkown  | None  | None
New World Encyclopedia | English  | Project of the Unification movement  | Active  | Free. Wikipedia fork.  | CC BY SA 3.0, GFDL  | Wikipedia  | None
Open Site | English  | Categorized community-built encyclopedia, inspired by the Open Directory Project  | Defunct  | None  | Unkown  | None  | None
Oxford Bibliographies Online | English  |  | Active  | Free  | Unkown  | None  | None
Probert Encyclopaedia | English  | General interest  | Defunct  | None  | Unkown  | None  | None
Proleksis Encyclopedia | Croatian  | General and national encyclopedia  | Active  | Free with registration  | Unkown  | None  | None
Sarvavijnanakosam | Malayalam  | General interest  | Active  | Free  | Unkown  | None  | None
Superpedia | Indonesian, Sundanese, Javanese | General interest  | Active  | Free  | Unkown  | None  | None
Susning.nu (2001–09)  | Swedish | A Swedish language wiki  | Defunct  | None  | Unkown  | None  | None
Tamil Encyclopedia | Tamil | General Interest  | Active  | Free  | Unkown  | None  | None
Treccani  | Italian  | General interest  | Active  | Free  | None  | None  | None
Veropedia | English, Dutch, Spanish  | Mirrors stable versions of selected English Wikipedia articles  | Defunct  | None  | Unkown  | None  | None
WIEM Encyklopedia | Polish | General interest  | Active  | Free  | Unkown  | None  | None
Winkler Prins | Dutch | General interest, three different age levels  | Active  | Subscription  | Unkown  | None  | None
World Book Encyclopedia | English  | General interest  | Active  | Subscription  | Unkown  | None  | None

## Biography

Site  | Language  | Description  | Access

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Australian Dictionary of Biography | English  | Entries on notable Australians who have died  | Free
Croatian Biographical Lexicon | Croatian  | Multi-volume biographical reference work on notable figures from Croatian history  | Free
Deutsche Biographie | German | Biographies on notable German speaking people  | Free
American National Biography | English  | Biographies of notable Americans  | Subscription
Dictionary of Canadian Biography | English, French  | Entries on notable Canadians  | Free
Dictionary of Irish Architects | English  | Biographical information on Irish architects from 1720 to 1940  | Free
Kdo byl kdo | Czech | Biographies on notable Czech and Slovak people  | Free
Österreichisches Biographisches Lexikon 1815–1950 | German | Biographies on notable Austrians  | Free
Oxford Dictionary of National Biography | English  | Comprehensive 66-volume reference work on notable figures from British history  | Subscription
Dictionary of New Zealand Biography | English, Māori | Entries on notable New Zealanders who have died  | Free
Dizionario Biografico degli Italiani | Italian  | Biographical Dictionary of Italian People, published by the Istituto dell'Enciclopedia Italiana Treccani  | Free

## Antiquities, arts, and literature

Site  | Language  | Description  | Access

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Dictionary of Art Historians | English  | Covers topics relating to art historians, art critics, and their dictionaries  | Free
Dictionary of Greek and Roman Antiquities | English  | Incorporates text from the 19th century encyclopedia of the same name. Focuses on topics of cultural and historical Greek and Roman significance.  | Free
Dictionary of Greek and Roman Biography and Mythology | English  | Focuses on topics dealing with Greek and Roman mythology and people  | Free
Dictionary of Greek and Roman Geography | English  | Focuses on topic relating to Greek and Roman geography  | Free
Enciclopedia Dantesca | Italian  | Devoted to Dante Alighieri and his time, by the Istituto dell'Enciclopedia Italiana Treccani  | Free
The Encyclopedia of Fantasy | English  | [12] | Free
Encyclopedia Mythica | English  | Covers folklore, mythology, and religion.[13] | Free
Harper's Dictionary of Classical Literature and Antiquities | English  | Covers subjects of classical antiquity; text from 1898  | Free
The History of Nordic Women's Literature | English, Danish, Swedish  | Searchable online English-language version including many biographies  | Free
The Literary Encyclopedia | English  | Literature related articles  | Subscription
Oxford Art Online | English  | Visual art; formerly Grove Art Online and The Dictionary of Art. Originally published in 1996 as a 34-volume printed encyclopedia; offered online since 1998.  | Subscription[14]
SIKART | English, German, French, Italian  | Biographical dictionary and database of Swiss visual art  | Free

## Regional interest

Site  | Language  | Description  | Access

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Agropedia |  | Covers topics related to agriculture in India.  |
Austria-Forum | German, English  | Online database of Austrian culture  | Free
Banglapedia | Bengali, English  | Bangladesh-related topics  | Free
The Canadian Encyclopedia | English, French  | General interest regarding Canada and Canadiana (original content of the hard copy Canadian Encyclopedia)  | Free
Chalo Chatu | English  | Collaborative online encyclopedia hosted by Chalo Chatu Foundation featuring comprehensive articles on Zambian culture and history, etc.  | Free
Culinary Heritage of Switzerland | German, French, Italian, Romansh  | Online encyclopedia of traditional Swiss cuisine and produce.[15] | Free
DEDI | English, Slovene  | Online encyclopedia of the natural and cultural heritage of Slovenia, operated by the Slovenian Academy of Sciences and Arts Scientific Research Center.[16] | Free
Dictionary of Sydney  | English  | Articles on the history and culture of Sydney, Australia  | Free
Encyclopaedia of Islam, 3rd edition  | English  | About the Islamic world, not a Muslim encyclopaedia  | Subscription
Encyclopædia Iranica | English, plans for a future Persian version  | Topics on Iranology and the influence of the Iranian peoples throughout history  | Free
The Encyclopaedia of Korea[17] | English  | Korea-related topics[18] | Free
Encyclopedia of Korean Culture | Korean | Korea-related topics  | Free
Encyclopedia Sindhiana | Sindhi | General interest regarding Sindh  | Limited free access and features
Internet Encyclopedia of Ukraine | English  | Ukraine, its history, people, geography, society, economy, and cultural heritage, based on the five-volume print Encyclopedia of Ukraine | Free
Gazetteer for Scotland | English  | Articles on the geography and locations of Scotland  | Free
Historical Dictionary of Switzerland | French, German and Italian  | Articles on the history of Switzerland.  | Free (without illustrations)
Kodansha Encyclopedia of Japan | English  | Comprehensive articles on Japanese arts, culture, history, and politics, etc.  | Subscription
Oslo byleksikon  | Bokmål (Norwegian)  | Online encyclopedia of Oslo, operated by the Society for Oslo Byes Vel, with an emphasis on places, buildings and historical events.[19] | Free
Panyathai | Thai, limited English  | General interest. Designed to honor the Thai king Bhumibol Adulyadej  | Free
Sahapedia | English  | Open encyclopedic resource on the arts, cultures and histories of India.[20] | Free
The Encyclopedia of New Zealand | English, Māori | Site operated by the New Zealand government regarding information about the country  | Free
Vienna History Wiki | German  | Articles on the history of the city of Vienna, Austria. Includes 31,000 entries from the 2nd edition of Historisches Lexikon Wien.  | Free

### US-American specific

Site  | Language  | Description  | Access

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64 Parishes  | English  | Online encyclopedia of Louisiana, run by the Louisiana Endowment for the Humanities.[21] | Free
Encyclopedia of Alabama | English  | Encyclopedia covering the state of Alabama, sponsored by the Alabama Humanities Foundation.  | Free
Encyclopedia of Appalachia | English  | Dedicated to the region, people, culture, history, and geography of Appalachia.  | Defunct
Encyclopedia of Arkansas | English  | Project of the Central Arkansas Library System and is the only U.S. state encyclopedia sponsored by a public library  | Free
Encyclopedia of Chicago | English  |  | Free
Encyclopedia Virginia  | English  | Encyclopedia funded by the Virginia Foundation for the Humanities and Library of Virginia, covering topics on Virginia  | Free
Handbook of Texas | English  | Articles on the U.S. State of Texas  | Free
HistoryLink | English  | Articles pertaining to Washington state history  | Free
MNopedia | English  | Online encyclopedia about Minnesota, published by the Minnesota Historical Society.[22] | Free
NCPedia  | English  | Encyclopedia 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.[23] | Free
New Georgia Encyclopedia | English  | Articles on the U.S. state Georgia  | Free
The Oregon Encyclopedia | English  | Articles pertaining to Oregon  | Free
Tennessee Encyclopedia  | English  | Covers the state of Tennessee  | Free

## Pop culture and fiction

Site  | Language  | Description  | Access

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Don Markstein's Toonopedia | English  | Focuses on articles pertaining to print and animated cartoons  | Free
Encyclopedia Dramatica | English  | Contains humorous articles, especially those related or relevant to contemporary Internet culture.  | Free
The Encyclopedia of Science Fiction | English  | Authors, books, films of sci-fi.  | Free
Emojipedia | English  | Emoji  | Free
Fringepedia | English  | Contains articles pertaining to the American television drama Fringe.  | Free
h2g2 | English  | Collection of sometimes humorous encyclopedia articles, based on Douglas Adams's The Hitchhiker's Guide to the Galaxy.  | Free
Heroes Wiki | English, Dutch, French, German, Hebrew, Italian, Portuguese, Spanish, Swedish, Turkish | Contains articles pertaining to the American television drama Heroes.  | Free
Know Your Meme | English  | A website and video series which uses wiki software to document various Internet memes and other online phenomena, such as viral videos, image macros, catchphrases, and internet celebrities.[24][25] | Free
Lostpedia | English, German, Spanish, French, Italian, Japanese, Dutch, Polish, Portuguese, Russian, Chinese  | Contains articles pertaining to the hit drama Lost | Free
Memory Alpha | English, Bulgarian, Chinese, Czech, Dutch, Esperanto, French, German, Polish, Portuguese, Russian, Serbian, Spanish, Swedish | Articles about Star Trek | Free
LyricWiki (2006–20)  | Multilingual  | Wiki-based lyrics database and encyclopedia  | Defunct
The Rocklopedia Fakebandica | English  | Articles on fake bands from popular entertainment  | Free
Supernatural Wiki | English  | Contains articles pertaining to the American television drama Supernatural.  | Free
TV Tropes | English, German, Esperanto, Spanish, French, Norwegian, Finnish, Swedish, Al Bhed, Quenya  | Articles related to the devices and conventions that a fiction writer can reasonably rely on as being present in the audience members' minds and expectations  | Free
Uncyclopedia | Multilingual  | Humour encyclopedia  | Free
Fallout Wiki | English, German, Spanish, Bulgarian, Finnish, French, Georgian, Hungarian, Italian, Japanese, Korean, Lithuanian, Dutch, Norwegian, Polish, Portuguese, Russian, Swedish, Turkish, Chinese  | Fallout-related articles  | Free
Wookieepedia | English, German, Spanish, Bulgarian, Danish, Finnish, French, Croatian, Hungarian, Italian, Japanese, Dutch, Norwegian, Polish, Portuguese, Russian, Romanian, Slovak, Slovene, Swedish, Chinese  | Star Wars-related articles  | Free
WoWWiki / Wowpedia | English, German, Spanish, French, Czech, Danish, Greek, Persian, Finnish, Hebrew, Hungarian, Icelandic, Italian, Lithuanian, Latvian, Dutch, Nynorsk, Bokmål, Polish, Portuguese, Brazilian Portuguese, Russian, Slovak, Korean, Japanese, Chinese  | World of Warcraft-related articles  | Free

## Mathematics

Site  | Language  | Description  | Access

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Encyclopedia of Mathematics | English  | Encompasses articles on the topic of mathematics | Free
Encyclopedia of Triangle Centers | English  | Information about ten thousands of triangle centers, including coordinates, operations, incidence, equations, etc.  | Free
EqWorld | English, Russian  | Articles on mathematical equations | Free
MathWorld | English  | Articles on a wide variety of mathematics related topics  | Free
On-Line Encyclopedia of Integer Sequences | English  | Information about hundred thousands of integer sequences, including formulas, related sequences, programs, etc.  | Free/CC BY-NC 3.0
PlanetMath | English  | Mathematics related topics and articles  | Free/GNU
nLab | English  | Category theory and related topics  | Free

## Media

Site  | Language  | Description  | Access

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Bulgarian Rock Archives  | Bulgarian | Archives of Bulgarian rock bands.  |
Canadian Pop Music Encyclopedia  | English  |  | Free[26]
Encyclopaedia Metallum | English  | Archives of heavy metal bands  | Free
Grove Music Online | English  | Mostly on historic and classical music worldwide. It is the online version of The New Grove Dictionary of Music and Musicians, which has 20 printed volumes and was first published in 1980.  | Subscription[14]
IMDb | English, German, French, Hungarian, Italian, Polish, Portuguese, Romanian, Turkish, and Spanish  | Information related to world films, television programs, home videos, video games, and internet streams | Free
MusicBrainz | English, German, French, Italian, Dutch  | An open music encyclopedia that collects music metadata.[27] | Free
MOOMA | Hebrew | Articles on Israeli music and musical artists  | Free
PCGamingWiki | English  | Covers PC gaming | Free
Rock in China | English  | Documents and archives contemporary Chinese music, ranging from rock music to punk, metal, electro, jazz and hip-hop  | Free

## Philosophy

Site  | Language  | Description  | Access

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Internet Encyclopedia of Philosophy | English  | Philosophy related articles  | Free
Marxists Internet Archive  | Multilingual | Topics related to the study of Marxism | Free
RationalWiki[28] | English  | Skeptical interests[29] | Free
Routledge Encyclopedia of Philosophy | English  | Philosophy articles  | Subscription
Stanford Encyclopedia of Philosophy | English  | Philosophy subjects  | Free

## Politics, law, and history

Site  | Language  | Description  | Access

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Ancient History Encyclopedia | English  | Historical encyclopedia targeted at students and the general public. Reviewed by editorial team, not a Wiki.  | Free
Ballotpedia | English  | American politics, elections, and public policy  | Free
The Concise Encyclopedia of Economics | English  | Economics – part of the Library of Economics and Liberty. Edited by David R. Henderson  | Free
Cyclopaedia of Political Science, Political Economy, and the Political History of the United States | English  | Articles pertaining to science, economics, and American authors. The 1899 edition is available online  | Free
Diplopedia  | English  | US State Department internal encyclopedic wiki, available for diplomats and overseas US agents to use  | Access only through the State Department
dKosopedia  | English  | Political encyclopedia written from a progressive/liberal Democratic point of view  | Free
Encyclopedia Titanica | English  | Encyclopedia related to the building and sinking of the RMS Titanic | Free
Encyclopedia of World Problems and Human Potential | English  | Presents articles on perceived human problems  | Free
Gapminder  | English  | Historical global trends in health, poverty, and demographics  | Free
glbtq.com | English  | Gay, lesbian, bisexual, transgender, and queer culture.  | Free
HistoryLink | English  | Articles on the history of Washington state  | Free
Holocaust Encyclopedia | English, Arabic, Persian, French, Spanish  | Holocaust-related articles, published by the United States Holocaust Memorial Museum  | Free
JurisPedia | Arabic, English, Chinese, French, German, Spanish, Dutch | An academic encyclopedia on the concepts of law  | Free
Max Planck Encyclopedia of Public International Law | English  | Encyclopedia on public International Law  | Free
Online Encyclopedia of Mass Violence | French  | Electronic database focusing on massacres and genocides of the 20th century.[30] | Free
Our World in Data | English  | Global trends on economic growth, poverty, health, war, violence, education, and demographics  | Free
Spartacus Educational | English  |  | Free
World History Encyclopedia | English  | The world's most-read history encyclopedia, covering world history from all time periods.[31] | Free

## Religion and theology

Site  | Language  | Description  | Access

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Boston Collaborative Encyclopedia of Western Theology | English  | Articles on Western Christian theology  | Free, public domain
Catholic Encyclopedia | English  | Topics relating to Catholicism, text from 1913 and 1922  | Free, public domain
Christian Cyclopedia | English  | Collection of historical and theological information  | Free
Easton's Bible Dictionary | English  | Articles on Christianity and theology  | Free, public domain
Encyclopaedia Biblica | English  | Contains articles pertaining to "the Literary, Political and Religious History, the Archaeology, Geography, and Natural History of the Bible"  | Free
Encyclopedia of Mormonism | English  | Articles by Mormon academics on history and doctrine of The Church of Jesus Christ of Latter-day Saints (LDS Church).  | Free
Global Anabaptist Mennonite Encyclopedia Online | English  | Topics relating to Anabaptism and Mennonites  | Free
İslâm Ansiklopedisi | Turkish | Articles on topics concerning Islamic studies.  | Free
The Jewish Encyclopedia | English  | Topics relating to Judaism  | Free
Jewish Virtual Library | English  | Portals to essential Jewish topics  | Free
Encyclopedia Mythica | English  | Covers folklore, mythology, and religion.[13] | Free
Punjabipedia | Punjabi | Entries on Sikhism  | Subscription
Schaff–Herzog Encyclopedia of Religious Knowledge  | English  | Christian, published 1908–1914  | Free, public domain
Hindumediawiki  | Hindi [1] and English [2] | Hinduism and Sanatan Dharma  | free

## Science and technology

Site  | Language  | Description  | Access

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Encyclopedia Astronautica | English  | Contains articles on the subject of space exploration and astronomy | Free
Encyclopedia of Earth | English  | Articles on the Earth and its ecosystems  | Free
Encyclopedia of Science | English  | A-to-Z of science (and technology, mathematics, philosophy, etc.) maintained and updated daily by astronomer and author David Darling  | Free
Engineering and Technology History Wiki | English  | The history of technology, a partnership between the United Engineering Foundation, and the AIChE, AIME, ASCE, ASME, IEEE, SPE, and SWE  | Free
Free On-line Dictionary of Computing | English  | Computing and related subjects  | Free
Glottopedia | English  | Linguistics  | Free
Javapedia  | English  | Coverage of all topics related to the Java platform  | Free
Omniglot | English  | Covers languages and writing systems.  | Free
Proteopedia | English  | Wiki-based 3D encyclopedia of proteins and other molecules.  | Free
RP Photonics Encyclopedia | English  | Laser technology, photonics, and various other areas of photonics such as nonlinear optics, non-laser light sources, fiber optics, and ultrashort pulses of light.  | Free
ScienceWorld  | English  | Covers astronomy, scientific biography, chemistry, and physics. Like MathWorld, it is edited by Eric Weisstein.  | Free

### Life sciences

Site  | Language  | Description  | Access

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Animal Diversity Web | English  | Student wiki-type database at the University of Michigan of animal natural history, distribution, classification, and conservation biology.  | Free
APpedia  | Chinese  | Contains articles on the subject of general animal protection | Free
ARKive | English  | Visual and audio recordings of the world's species  | Defunct
Encyclopedia of Life | English, French  | Seeks to categorize all 1.8 million known species on the planet  | Free
Encyclopedia of Life Sciences | English  | Biology related articles  | Subscription
Encyclopedia of Life Support Systems | English  | Articles about the natural and social sciences | Subscription
Erowid | English  | Information about psychoactive substances  | Free
FishBase | English, Spanish, Portuguese, French, German, Italian, Dutch,
Chinese (Simplified Han), Chinese (Traditional Han), Greek, Swedish, Russian, Persian, Vietnamese, Thai, Lao, Hindi, Bengali | Articles on fish species  | Free
Flora Europaea | English  | Covers different plant species  | Free
King Abdullah Bin Abdulaziz Arabic Health Encyclopedia | Arabic, English  | Health encyclopedia  | Free
Palaeos  | English  | Covers palaeontology  | Free
World Flora Online | English  | Covers the world's plant species  | Free
Wikispecies | English  | Seeks to create a catalogue of all living things  | Free
ZipcodeZoo | English  | Encyclopedia of all living things  | Free

### Medical

Site  | Language  | Description  | Access

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|
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Ganfyd | English  | Online medical wiki | Defunct
Radiopaedia  | English  | Articles on medical imaging used in radiology and radiography | Free
WikEM  | English  | The world's "largest and most popular emergency medicine open-access reference resource."[32] | Free

## See also

* Chinese encyclopedia
* List of academic databases and search engines
* List of blogs
* List of Danish online encyclopedic resources
* List of encyclopedias by branch of knowledge
* List of online databases
* List of online dictionaries
* List of multilingual MediaWiki sites
* List of wikis
* List of Wikipedias

## References

1. ↑ 1.0 1.1 James, Andrea (12 June 2017). "Can Everipedia remake collaborative encyclopedias to be inclusive and enjoyable?". Boing Boing. https://boingboing.net/2017/06/12/can-everipedia-remake-collabor.html.
2. ↑ 2.0 2.1 Lee, Elaine (22 March 2016). "Wharton dropout creates Wikipedia alternative alongside Rap Genius co-founder". The Daily Pennsylvanian. https://www.thedp.com/article/2016/03/wharton-dropout-founds-wikipedia-alternative.
3. ↑ Anderson, Nate (2007-03-05). "Conservapedia hopes to "fix" Wikipedia's "liberal bias"" (in en-us). https://arstechnica.com/uncategorized/2007/03/conservapedia-hopes-to-fix-wikipedias-liberal-bias/.
4. ↑ Stöcker, Christian (2007-03-06). "The Lord's Encyclopedia" (in en-us). https://www.spiegel.de/international/wikipedia-for-christian-fundamentalists-the-lord-s-encyclopedia-a-469969.html.
5. ↑ See word search
6. ↑ "Infogalactic, Metapedia, Conservapedia: l'extrême droite aussi a ses "Wikipédia"" (in fr). 27 June 2017. https://lexpansion.lexpress.fr/high-tech/infogalactic-metapedia-conservapedia-l-extreme-droite-aussi-a-ses-wikipedia_1922139.html.
7. ↑ Adam G. Klein (June 2010). A Space for Hate: The White Power Movement's Adaptation Into Cyberspace. pp. 93, 104–105. ISBN 978-1-936117-07-9.
8. ↑ Haines, Lester (2007-07-23). "Conservapedia too pinko? Try Metapedia - Aryans battle 'Cultural Marxism'". Theregister.co.uk. Situation Publishing. https://www.theregister.co.uk/2007/07/23/metapedia/print.html.
9. ↑ Schweyer, Cléo (2009-07-15). "L'extrême droite s'offre une seconde jeunesse sur le web" (in fr). cafebabel.fr. Babel International. http://www.cafebabel.fr/article/30692/extreme-droit-fn-politique-europe-parti.html.
10. ↑ "Metapedia" als nationales Pendant zu "Wikipedia" (i.e "Metapedia" as a nationalist counterpart to "Wikipedia") from: "Report by the NRW Office for the Protection of the Constitution for the year 2008" by the Ministry of Interior of North Rhine-Westphalia. pp. 59f. (in German)
11. ↑ Sobel Fitts, Alexis. "Welcome to the Wikipedia of the Alt-Right | Backchannel" (in en-us). Wired. ISSN 1059-1028. https://www.wired.com/story/welcome-to-the-wikipedia-of-the-alt-right/.
12. ↑ "SF Encyclopedia Editorial Home". http://sf-encyclopedia.uk/fe.php?id=0&nm=introduction_to_the_online_text.
13. ↑ 13.0 13.1 "About | Encyclopedia Mythica". pantheon.org. Retrieved 2021-03-01.
14. ↑ 14.0 14.1 In UK, can normally be accessed free via a local library
15. ↑ "A propos Patrimoine culinaire". https://www.patrimoineculinaire.ch/A-propos.
16. ↑ "dedi.si". http://www.dedi.si/en/.
17. ↑ Encyclopaedia of Korea. The Australian National University. 13 September 2013. https://openresearch-repository.anu.edu.au/handle/1885/10445.
18. ↑ "Asian Library Resources of Australia (ALRA) (formerly EALRGA)". http://alra.org.au/newsletter1607/1607_choewall_1.html.
19. ↑ "Oslo Byleksikon – Oslo Byleksikon". https://www.oslobyleksikon.no/index.php?title=Oslo_Byleksikon.
20. ↑ "About Us." Sahapedia. Retrieved March 1, 2021.
21. ↑ "About Us" (in en). https://64parishes.org/about-us.
22. ↑ "About MNopedia | MNopedia". https://www.mnopedia.org/about.
23. ↑ "About NCpedia | NCpedia". https://ncpedia.org/about.
24. ↑ Bruenig, Elizabeth (11 August 2017). "Why is millennial humor so weird?". Washington Post. https://www.washingtonpost.com/outlook/why-is-millennial-humor-so-weird/2017/08/11/64af9cae-7dd5-11e7-83c7-5bd5460f0d7e_story.html.
25. ↑ Manning, Allee (31 December 2016). "The Darkest, Dankest Year In Memes". Vocativ. http://www.vocativ.com/385447/the-darkest-dankest-year-in-memes/index.html.
26. ↑ "The Canadian Pop Music Encyclopedia" (in en). https://canpopencyclopedia.home.blog/.
27. ↑ "MusicBrainz - The Open Music Encyclopedia". https://musicbrainz.org/.
28. ↑ Charles Davis (May 30, 2018). "Sloppy Sourcing Plagues". The Daily Beast (The Newsweek Daily Beast Company). https://www.thedailybeast.com/kill-all-citations-sloppy-sourcing-plagues-kill-all-normies-book-on-sjws-and-the-alt-right.
29. ↑ Keeler, Mary; Johnson, Josh; Majumdar, Arun. "Crowdsourced Knowledge: Peril and Promise for Complex Knowledge Systems". p. 4. http://necsi.edu/events/iccs2011/papers/45.pdf#page=4.
30. ↑ The Online Encyclopedia of Mass Violence. Retrieved March 1, 2021. Archived. ISSN 1961-9898
31. ↑ "About Us". https://www.worldhistory.org/static/about/.
32. ↑ "WikEM". https://www.wikem.org/wiki/Main_Page.

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