This article contains a list of notable wikis, which are websites that use wiki software.
| Name | Focus | Notes | Entries | License |
|---|---|---|---|---|
| AboutUs | Web directory | Initially pre-populated with information about many different websites. Uses MediaWiki software, but now largely with Ruby on Rails | 28,739,286 [1] | GFDL and CC BY-SA 3.0 |
| Appropedia | Poverty reduction, international development | 15,437 [2] | CC BY-SA 4.0 | |
| Astro-Databank | Encyclopedic | Astrological wiki project, with birth details for notable people of the world. | 37,614 [3] | |
| Baidu Baike | Encyclopedic / Simplified Chinese | 27,482,961 [4] | ||
| Baike.com | Encyclopedic / Simplified Chinese | 15,180,000[ citation needed ] | ||
| Ballotpedia | Encyclopedic | Information regarding United States elections | 550,069[ citation needed ] | |
| Brilliant | Math/Science | Written at the reading and comprehension level of an advanced high school student. Wiki pages are reviewed before they are put up. [5] | ||
| Base de datos | Encyclopedic/Spanish | Spanish language encyclopedia, with own wiki software. | 13,518 [6] | Copyrighted/Other |
| Catawiki | Catalogues | Originally in Dutch, with English version. Collectors specific for comics, coins, stamps, trading cards, board games, model cars, model trains, bank notes, books, watches, Disney memorabilia, clocks and other. | 200,000 | |
| Citizendium | Encyclopedic | Now defunct project by Larry Sanger | 17,258 [7] | CC BY-SA 3.0 |
| Conservapedia | Encyclopedic | Information and articles are written from a conservative Christian viewpoint aimed at correcting the alleged liberal bias of Wikipedia. | 56,257 [8] | Copyrighted (free use) |
| Copyright Evidence | Copyright studies | Exists to inform public debate and policy development on copyright related issues based on categorising empirical studies. Funded and maintained by CREATe at the University of Glasgow. | 2,980 [9] | |
| Choral Public Domain Library (CPDL) | Music | Wiki library of free typeset musical scores | 40,888 [10] | Public domain, CPDL Licence, C.C. Licences, Copyrighted (free use) |
| DavisWiki | Place – Davis, California | City wiki dedicated solely to Davis; at one point the largest city wiki | 15,593 [11] | CC BY 3.0 |
| Diplopedia | Government – Diplomacy | Encyclopedia of the U.S. Department of State collecting items related to international relations and diplomacy | ||
| EcuRed | Cuban perspective on global issues, in Spanish | Run by Cuba's Youth Computer Club, an affiliate of the Communist Youth Union | 19,482 | CC BY-NC-SA. [12] |
| Enciclopedia Libre Universal en Español | Encyclopedic/Spanish | Now defunct Spanish language fork of Wikipedia | 47,281 [13] | CC BY-SA 3.0 |
| Encyclopedia of Mathematics | Mathematics | MediaWiki using MathJax extension [14] | 16,211 [15] | CC BY-SA 3.0 |
| Encyclopedia Dramatica | Parody of Internet memes | Parody-themed wiki | 14,972 | Fair use |
| Everipedia | Encyclopedic | 6,000,000 [16] | CC BY-SA 4.0 | |
| Fallout Wiki | Fiction/Gaming – Fallout series | Wiki about the Fallout video game series. Ongoing merger with "Nukapedia" (Fandom) and "The Vault" (Curse/Gamepedia). | 56,750 [17] | CC BY-SA |
| Family History Research Wiki | Genealogy research | Reference information and research guidance. In 11 languages. | 82,857 [18] | CC BY-SA 3.0 US |
| Fandom | Pop culture and media franchises | Wiki hosting service. It is a collection of many wikis, each focusing on a different subject. | more than 40,000,000 articles [19] | CC BY-SA 3.0 [20] |
| Fanlore | Fandom | Fandom and transformative works, with a focus on fannish history and activities. Powered by MediaWiki. | 60,753 [21] | CC BY-NC 3.0 US [22] |
| Foodista.com | Reference – Food and Cooking | Creative Commons structured wiki about foods, recipes, and other culinary information. | CC BY | |
| La Frikipedia | Parody of encyclopedia | Spanish language parody of Wikipedia. | 11,159 [23] | GFDL |
| Fringepedia | Fiction – Fringe , related 'fringe science' topics | Powered by MediaWiki. | 6,759 [24] | CC BY-NC-SA |
| Gardenology.org | Gardening | Meant as a "complete plant and garden wiki encyclopedia" | 22,005 [25] | CC BY-SA |
| GCpedia | Government — Canada | Internal Government of Canada Wiki | ||
| GeoNames | Places | Geographical database that links specific names with unique features | ||
| GitLab wikis | Mainly computer software program documentation | |||
| Glottopedia | Linguistics – Multilingual | A Wiki on linguistics and languages | 3,227 [26] | |
| Heroes Wiki | Fiction – Heroes | Articles about the TV show Heroes. | ||
| Hitchwiki | Encyclopedic – Multilingual | A database on hitchhiking that includes an interactive world map showing the best and worst places to catch a ride. | 3,867 [27] in English and about 2,000 more in 16 different languages. [28] | |
| ICANNWiki | Internet Governance | Covers all aspects of ICANN and its policymaking, as well as Internet Governance in general. | 8,700 [29] | |
| Intellipedia | Government – Intelligence | Three non-accessible wikis running on networks that link the U.S. intelligence community | ||
| International Music Score Library Project | Music | Wiki library of public domain musical scores | 14,800 [30] | GFDL |
| Internet Movie Firearms Database (IMFDb) | Firearm usage in Film, Television and Videogames | Runs on MediaWiki | 27,723 [31] | |
| JurisPedia | Government – Law | Multi-lingual academic encyclopedia, including Arabic, Chinese (Simplified Chinese), English, French, German and Spanish | CC BY-NC | |
| Know Your Meme | Fiction – website and video series | 28,105 [32] | ||
| Lostpedia | Fiction – Lost | Articles about episodes, characters, themes, etc. in the television show. | 7,457 [33] | CC BY-NC-ND |
| LyricWiki | Music – Lyrics | Listing of lyrics by album | 1,737,000 [34] | Mostly copyrighted. CC BY-SA for minority of content. |
| MeatballWiki | Communities – Online communities | 5,213 [35] | Copyrighted | |
| Memory Alpha | Fiction – Star Trek | Contains canon-only material | 62,397 [36] | CC BY-NC 4.0 |
| Metapedia | Encyclopedia | White nationalist and extreme right-wing online encyclopedia. | 7,896 [37] | Unknown |
| MicroWiki | Micronationalism | Runs on MediaWiki. | 39,703 [38] | CC BY-SA 4.0 |
| Monoskop | Arts and humanities | "Wiki for arts and studies" powered by MediaWiki | ||
| MyWikiBiz | Misc – Business directory | Allows people and enterprises to write about themselves | 9,093 | GFDL and other [39] |
| Namuwiki | Encyclopedic/Korean | 602,837 | CC BY-NC-SA 2.0 KR | |
| nLab | Mathematics, physics, and philosophy wiki | For research-level notes, expositions and collaborative work, including original research, especially from the n-categorical point of view. | 18,098 [40] | No formal license. Freely reusable if source acknowledged. |
| OpenStreetMap | Places – Maps | Uses GPS, aerial photography and other free sources of images to create a map of the world | ODbL 1.0 | |
| OpenWetWare | Science – Biology | Promotes sharing and dissemination of knowledge related to biological research | CC BY-SA | |
| PCGamingWiki | Games – PC games | Aims to provide fixes and information on all PC games | 45,508 [41] | CC NC-SA 3.0 |
| PlanetMath | Misc – Mathematics | Free wiki-style mathematical encyclopedia | ||
| Proteopedia | Science – Chemistry | A 3D encyclopedia of proteins and other molecules | 191,915 [42] | Copyrighted |
| RationalWiki | Encyclopedic | Information and articles are written from a liberal, skeptical [43] and secular point of view originally as a response to Conservapedia | 8,044 [44] | CC BY-SA 3.0 |
| Rangjung Yeshe Wiki | Himalayan Buddhism, Tibetan Dictionary | Tibetan-English Dictionary, Buddhist Glossaries, Biographies of Buddhist Teachers, and Resources | 23,721 [45] | CC BY-NC-SA / GFDL |
| Rosetta Code | Computers — source code | Powered by MediaWiki | 2,045 [46] | GFDL 1.2 |
| Ruwiki | Encyclopedic | Wikipedia fork created to follow government narratives in 2023 [47] [48] [49] | 1,913,845 [50] | CC BY-SA 4.0 |
| Scholarpedia | Encyclopedic | Written exclusively by professionals focusing on their field of expertise; subject to peer review | 1,812 [51] | Copyrighted |
| SCP Foundation | Fiction — horror, science fiction, urban fantasy | Fictional secret organization documented by the collaborative writing wiki project of the same name | 15,000 | CC BY-SA 3.0 |
| Sensei's Library | Misc – Go (game) | WikiWiki Web site running on GoWiki, a custom wiki based on PhpWiki. | 18,200 | OPL |
| SKYbrary | Aviation safety information | Runs on MediaWiki. | ||
| SNPedia | Science – Biology | Database of research and information about single-nucleotide polymorphisms, including medical consequences for people who have DNA info about themselves | 195,101 [52] | CC BY-NC-SA 3.0 |
| Sogou Baike | Encyclopedic / Simplified Chinese | 900,000 | ||
| Stadtwiki Karlsruhe | Encyclopedic | Multilingual city wiki for Karlsruhe | 21,157 [53] | CC BY-NC-SA |
| Supernatural Wiki | Fiction – Supernatural | The wiki for the hit TV show Supernatural | 4,224 [54] | |
| TermWiki | Words in different languages | Social learning network built around terms and questions in 75 languages. | 1,417,806 [55] | |
| Tolkien Gateway | Fiction – J.R.R. Tolkien | Encyclopedia dedicated to J.R.R. Tolkien's legendarium. | 12,866 [56] | CC BY-SA 4.0 |
| Travellerspoint | Places – Travel | Social networking site dedicated to sharing stories and recommendations about travel | 8,578 [57] | CC BY-SA 3.0 |
| TV Tropes | Encyclopedic | Focuses on documenting tropes in various media | 551,245 [58] | CC BY-NC-SA |
| UK LGBT Archive | LGBT history, United Kingdom | Building towards a comprehensive history of LGBT (Lesbian, Gay, Bisexual, Transgender) life in the United Kingdom. Previously the LGBT History Project. [59] Runs on MediaWiki. | 4,654 [60] | CC BY-SA 3.0 |
| Uncyclopedia | Satire – Parody | Satirical encyclopedia dedicated to parody, notably parodying Wikipedia. Has 2 "official" English versions due to a split. | 37,749 [61] | CC BY-NC-SA 2.0 |
| Veropedia | Selected English Wikipedia articles | A free, advertising-supported Internet encyclopedia project | ||
| Vienna History Wiki | History of the city of Vienna, Austria. | The main content of the wiki are persons, buildings, topographical objects (streets, parks, waters, districts...), organisations, events and other items (such as special German expressions used in Vienna) | 185,636 [62] | CC BY-NC-ND |
| WikiAnswers | General knowledge | Compiles answers to questions posed | 11,265,000 [63] | Copyrighted |
| WikiArt | Art, paintings | Project aims to create high-quality, complete and well-structured online repository of fine art. | 75,000 [64] | Public domain artworks |
| Wikibooks | General – textbooks | Wikimedia project | 378,467 [65] | CC BY-SA/other |
| Wikidata | Wikimedia project | 119,785,269 items | CC0 1.0, CC BY-SA 4.0 | |
| WikiEducator | Open educational resources | Open educational resources which anyone may use, adapt, and share | 25,652 [66] | CC BY-SA and CC BY |
| WikEM | Emergency Medicine | Rapid reference for practical point-of-care clinical knowledge with a popular linked point-of-care phone application. Intended for clinicians only and not directly for patients. | 4,704 [67] | CC BY-NC-ND 4.0 |
| Wikenigma | Unsolved problems | >1100 | CC BY-NC 4.0 | |
| wikiHow | How-to articles | A wiki how-to manual | 166,386 [68] | CC BY-NC-SA 3.0 |
| WikiIslam | Criticism of Islam | 977 [69] | CC BY-NC 3.0 | |
| Wikimapia | Places – Map | Combines Google Maps with a wiki system for polygonally defined areas; currently supports 35 languages | 13,300,000 | CC BY-NC-SA [70] |
| Wikimedia Commons | Misc – Electronic media | Repository of free electronic media; a Wikimedia project | 130,788,775 files | CC BY-SA and some other free licenses |
| Wikinews | General – News | Collaborative news service, a Wikimedia project | 1,763,113 articles | CC BY |
| Wikipedia | Encyclopedic | Multilingual Wikimedia project that uses MediaWiki | 66,034,897 articles | CC BY-SA 3.0 for text (July 15, 2009–now). Files have various licenses. Dual license under GFDL and CC BY-SA 3.0 for text (November 1, 2008 – July 15, 2009). GFDL for text (–November 1, 2008). |
| Wikiquote | Reference – Quotations | Quote repository; a Wikimedia project | 365,110 articles | CC BY-SA |
| WikiShia | Shi'a Islam | Online encyclopedia focusing on Shi'a, the second major denomination in Islam. It has articles in 8 languages. Persian has the most articles which is more than 3500. [71] | 4,443 [72] in English | Unknown |
| Wikisource | Reference – Primary sources | Digital library of free content textual sources; a Wikimedia project | 6,683,580 articles | CC BY-SA |
| Wikispecies | Science – Biology | Directory of species; a Wikimedia project | 931,251 articles | GFDL and CC BY-SA |
| Wikitravel | Places – Travel | Travel guide using Wikimedia's software, but unconnected to the Wikimedia Foundation (which hosts Wikivoyage). 20 supported languages | 62,345 [73] | CC BY-SA 3.0 |
| WikiTree | Genealogy | Free global family tree using MediaWiki software, but unconnected to the Wikimedia Foundation. | 11,148,296 [74] | Unknown [75] |
| Wikiversity | General – Self-directed learning | Supports free learning communities, projects, materials, and learners; a Wikimedia project | CC BY-SA 3.0 | |
| Wikivoyage | Places – Travel | Multilingual travel guide of the Wikimedia Foundation. | 143,678 articles | CC BY-SA 3.0 |
| WikiWikiWeb | Computer programming, specifically design patterns | World's oldest wiki (began circa 1995) | 34,997 [11] | GPL |
| Wiktionary | Multilingual dictionary | Online dictionary; a Wikimedia project | 46,870,083 articles | CC BY-SA 3.0 |
| Wookieepedia | Fiction – Star Wars | Science fiction encyclopedia | 210,338 [76] | CC BY-SA 3.0 |
| Wowpedia / WoWWiki | Gaming – Warcraft | Contains in-universe material | 168,466 [77] (Wowpedia); 105,351 [78] (WoWWiki) | CC BY-SA 3.0 |
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