Sites using MediaWiki/en

''This is an incomplete listing of sites that are using MediaWiki and that are written or provided in English language. For wikis in more than one language (including English) see the multilingual list.'' You might also be interested in the list of English-language wikis on WikiApiary, in the Wikibase Registry, and in http://wikiindex.org/Category:MediaWiki.


 * Feel free to add your site to the list, but please stay close to the given format:


 * Please keep the description short and free of advertisement. You don't have to state that your site is "a wiki about ..."; all listed sites are wikis.
 * New entries will be checked. Unreachable sites or sites that don't use MediaWiki will be removed.
 * Last complete check: 2016-04-27
 * (Section-specific checks noted in some cases)

Wikimedia wikis
Due to the large number of Wikimedia foundation wikis (Wikipedia, Wikiquote, Wiktionary, Wikiversity, etc), they are not included on this list. For a list of projects, see Sites using MediaWiki/Wikimedia. For the complete list with all languages, see this page.

0-9

 * 3D Game Comparison – www.tnlc.com :Game vs. game. No hype; just facts.™ Compares various 3D computer/video games attributes/features: 3D engines, player characters, level/world design, weapons, NPCs (non-player characters), inventories, and more.

A

 * AAISP — wiki.aa.org.uk: Wiki for the ISP Andrews & Arnold Ltd.
 * Access Information – ai.net.nz/wiki: A wiki on how to manage Linux.
 * AdCiv.org – AdCiv.org : Advanced Civilization and post-scarcity enabled by open-source design and engineering
 * AQWorlds Wiki – aqworldswiki.com :The original wiki for Artix Entertainment's Flash Based MMO – AdventureQuest Worlds.
 * AIDS Wiki – AIDS Wiki :AIDS dissident website
 * AlgoWiki – algowiki-project.org :Open Encyclopedia of Parallel Algorithmic Features
 * Algorithm Wiki – algorist.com
 * Algorithmist – algorithmist.com
 * All The Tropes – allthetropes.org :Uncensored fork of the PmWiki based TV Tropes wiki.
 * Alt-StarFleet-RPG Bureau of Information – boi.alt-starfleet-rpg.net :Star Trek-based shared fiction writing club wiki
 * Amateur Radio Wiki – ham.cx: An on-line encyclopaedia of ham radio, established 2008 in Australia.
 * Antwiki – antwiki.org :A wiki where ant biologists share their knowledge
 * AoPS Wiki – ArtofProblemSolving.com :A wiki for the online math website, AoPS.
 * Apple 2 Games – apple2games.com :Apple2Games is a wiki dedicated to games on the Apple ][ line of computers.
 * Appropedia – appropedia.org :Library of appropriate technology, with textbook style topics and how-to style projects.
 * Archlinux – wiki.archlinux.org :Linux wiki
 * Argumentrix – Argumentrix.com: A wiki of opinions, arguments and rebuttals
 * Armadeus – Armadeus.org : Open & embedded Linux systems development
 * Armeniapedia – armeniapedia.org : Information about Armenia
 * ASCEND – ascend4.org : A free mathematical modelling program for science and engineering.
 * AsianWiki – asianwiki.com :Database of Asian films, television shows, performers, and filmmakers.
 * Assela Pathirana – assela.pathirana.net : Random Ravings
 * A Wiki of Ice and Fire – awoiaf.westeros.org :A Wiki covering the series A Song of Ice and Fire by George R. R. Martin.

B

 * Bahaipedia – bahaipedia.org :An encyclopedia for topics relating to the Bahá'í Faith
 * Baseball Reference Bullpen baseball-reference.com/bullpen
 * Beachapedia – beachapedia.org :A resource of coastal knowledge, issues and articles from the Surfrider Foundation – including the State of the Beach report covering all 26 US coastal states, Puerto Rico, and British Columbia.
 * BelegarthWiki – geddon.org :An open source project created, written, & edited for the Belegarth Medieval Combat Society, a full-contact sport where participants engage in combat using foam padded representations of medieval weapons.
 * Believe The Sign – believethesign.com :Independent, objective information on William Branham's life and ministry, the beliefs of his followers, and the criticisms of his detractors.
 * BetaWiki – betawiki.net :A open wiki which contains information about beta operating systems and software.
 * Bhamwiki – bhamwiki.com :Documenting the Birmingham District (Alabama, USA)
 * Biblebase.com – wiki.biblebase.com :A one stop Bible resource site.
 * BibleStrength.com – biblestrength.com :Bible apologetics online encyclopedia.
 * Biodiversity of India – Biodiversity of India :Aimed at increasing awareness about the biodiversity of India and encouraging community participation in its conservation.
 * BIONICLEsector01 Wiki – biosector01.com :A wiki dedicated to BIONICLE storyline and set information.
 * Bitcoin Wiki – bitcoin.it
 * blackwiki! – dank.qemfd.net :Programming, UNIX, and the ramblings of Nick Black
 * Blender foundation – wiki.blender.org :Graphics animation and video production program
 * Blok City – www.blokcity.com :Information on all the Mega Bloks sets released
 * bluevies – bluevies :Pornography and erotica wiki
 * BluWiki – BluWiki.com :Free MediaWiki web host
 * The BLWiki – www.bluelight.ru :A harm reduction wiki aimed at safer drug use.
 * Bogleheads wiki – https://www.bogleheads.org/wiki/Main_Page :reference resource for investors
 * Boobpedia – Boobpedia.com :Encyclopedia of women with big boobs. Includes busty celebrities, models, adult performers, and amateurs.
 * The Bookbag – Bookbag.co.uk :Fiction, biography, crime, cookery and children's book reviews.
 * Brewwiki – www.brewwiki.com :How to make your own beer.
 * Brickipedia – en.brickimedia.org :The largest online encyclopedia about all things LEGO.
 * Bulbapedia – bulbapedia.bulbagarden.net :Community-driven Pokémon encyclopedia.
 * Bulbanews – bulbanews.bulbagarden.net :Your community Pokémon newspaper.
 * Bulbagarden Archives – archives.bulbagarden.net :Bulbagarden's image repository.


 * BZFlag – my.bzflag.org/w/ :project wiki of BZFlag – a free online multiplayer cross-platform open source 3D tank battle game

C

 * Cabal Online – cabalwiki.com:Comprehensive game information
 * Camera-wiki – camera-wiki.org : A non-commercial encyclopedia of cameras and photography, successor to Camerapedia.org
 * CEOpedia | Management online – ceopedia.org :Online encyclopedia for managers
 * Children's Books Wiki – Children's Books Wiki : A Wiki dedicated to children's books.
 * Chinese Grammar Wiki – resources.allsetlearning.com : Chinese grammar resource
 * Christoph Champ's Personal Wiki – wiki.christophchamp.com
 * Citizendium – en.citizendium.org :The Citizens' Compendium
 * Clicklaw Wiki – wiki.clicklaw.bc.ca : A wiki of legal information aimed at the public in British Columbia, Canada. Featuring Clicklaw wikibooks, powered by the wikibook extension. Operated by Courthouse Libraries BC.
 * Clinfowiki – www.clinfowiki.org : The Clinical Informatics Wiki – Topics in clinical informatics.
 * Code Snippets Wiki codesnippets.wikia.com :A wiki-compatible syntax code guide, hosted by Wikia
 * Combine OverWiki – combineoverwiki.net :A wiki covering the Half-Life and Portal game series
 * Conservapedia – Conservapedia :A conservative Christian Wiki encyclopedia.
 * Consumerium – develop.consumerium.org :Fair trade, political consumerism, and moral purchasing trends
 * CreationWiki – creationwiki.org :Encyclopedia of creation science
 * Creative Commons – wiki.creativecommons.org :Compendium of development information for Creative Commons tools
 * Cruising and Sailing Wiki – World Cruising and Sailing Wiki :An online world cruising guide.
 * Crystal growing Wiki – en.crystalls.info :Free hobby encyclopedia about growing different compounds crystals at home or lab conditions.
 * Cumulopedia – clouds.wikia.com/wiki/ :A nephology/meteorology encyclopedia.
 * Cunnan – cunnan.sca.org.au :Information for re-enactors of the Middle Ages and Renaissance
 * CycleChaos – Motorcycle Wiki :Encyclopedia focusing on motorcycles.
 * CyPhyNets – cyphynets.lums.edu.pk :The website of the Laboratory for Cyber Physical Networks and Systems (CyPhyNets), at the School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan.

D

 * D&D Wiki – dandwiki.com :A collection of Dungeons and Dragons material both homebrewed and SRD.
 * Daria Wiki – dariawiki.org :Information about the MTV series and its fandom.
 * DayZ Wiki – dayzwiki.com :Tips, guides, and information for DayZ, a zombie survival mod for the game ArmA II.
 * Deskthority wiki – deskthority.net/wiki/Main_Page : This wiki is dedicated to mechanical keyboards, mice and other human interface devices.
 * Detective Conan Wiki – detectiveconanworld.com/wiki/ :The ultimate resource about Detective Conan.
 * Diatessaron wiki – Diatessaron.ir : A wiki about Diatessaron Gospel and anything related.
 * Digital Tibetan – digitaltibetan.org: An online resource for digital Tibetan dharma technology.
 * Discourse DB – discoursedb.org :a database of political commentary, including print and online sources
 * Discworld & Pratchett Wiki – wiki.lspace.org :Everything about Terry Pratchett and his Discworld book series
 * Distributed Proofreaders – pgdp.net/wiki : A wiki for documentation and collaborative tasks at Distributed Proofreaders
 * dKosopedia – dkosopedia.com :A political encyclopedia built by the DailyKos community
 * Dogcraft Wiki – dogcraft.net/wiki:A wiki for the Minecraft server and community, Dogcraft.
 * Dolibarr – Dolibarr ERP & CRM wiki :All users and developers documentation of Dolibarr OpenSource project.
 * DominionStrategy Wiki – wiki.dominionstrategy.com : A site about the strategy of the game Dominion.
 * Donkey Kong Wiki – dkwiki.com :A website about the game Donkey Kong.
 * DragonFable Wiki – dfwiki.com :A wiki for Artix Entertainment's Flash Based Web RPG – DragonFable.
 * DrinkiWiki – drinkiwiki.com :Large collection of drinking games.
 * Dungeons and Dragons Wiki – http://www.dnd-wiki.org : A project dedicated to providing reference and fan-made material for the Dungeons and Dragons roleplaying game.

E

 * Eamon Wiki – eamon.wiki: The classic Eamon text adventure game series and related material.
 * ECGpedia – ECGpedia.org :ECG (heart tracings) course
 * Eclipsepedia – wiki.eclipse.org :The Eclipse Open Source Project Wiki
 * EcoliWiki – ecoliwiki.net :Resource for the Model Organism Escherichia coli
 * ECO Issues – ecoissues.ca :Database of reports by the Environmental Commissioner of Ontario (ECO).
 * Edutech Wiki http://edutechwiki.unige.ch/: Educational technology, hosted at TECFA, University of Geneva.
 * Edgertronic High Speed Camera – wiki.edgertronic.com: High speed camera technical resources
 * EditLearn – editlearn.com or editlearn.org:Educational topics – Exam preparation, Medicine, Technology, and Gaming
 * EEBedia – hydrodictyon.eeb.uconn.edu/eebedia: a supplementary web resource for the Ecology and Evolutionary Biology Department of the University of Connecticut
 * Egres Open – cs.elte.hu/egres/open :Collection of open problems in combinatorial optimization, maintained by the Egerváry Research Group.
 * Electoral Reform – ElectoralReform.Wikia.com: Voting Systems and Electoral Reform
 * Embedded Linux – elinux.org: Embedded Linux Developers and Users wiki.
 * Embryology – https://embryology.med.unsw.edu.au: Education and research wiki for embryology.
 * Encyc – encyc.org : Concise wiki encyclopedia with mobile-friendly articles
 * Encyclopædia Dramatica – encyclopediadramatica.wiki : Satirical wiki detailing Internet Drama, people, and trends.
 * Encyclopedia Westarctica – westarctica.wiki: A wiki covering all things related to the micronation of Westarctica.
 * EntropiaPlanets Wiki – entropiaplanets.com/wiki/:about MindArk's MMORPG/Virtual World platform Entropia Universe.
 * Esoteric Programming Languages Wiki – Esolangs.org:a wiki "dedicated to the fostering and documentation of programming languages designed to be unique, difficult to program in, or just plain weird".
 * explain xkcd – explainxkcd.com :dedicated to explaining the popular webcomic xkcd
 * Eternal Lands Wiki – el-wiki.eu :Eternal Lands fantasy MMORPG unofficial wiki
 * EverybodyWiki Bios and wiki – everybodywiki.com A wiki where anyone can write their own biography

F

 * Factorio Wiki – wiki.factorio.com :Wiki dedicated to documenting the game Factorio
 * Fandom – www.fandom.com :A network of MediaWiki sites on many topics
 * Festipedia – festipedia.org.uk :A knowledge database for the Ffestiniog and Welsh Highland Railways.
 * Fiesta Wiki – www.fiestafan.com :The ultimate source for information on the MMORPG online game Fiesta.
 * FileZilla – wiki.filezilla-project.org :FileZilla Documentation
 * FFXIclopedia – http://wiki.ffxiclopedia.org :THE Source for Final Fantasy XI information.
 * FK Wiki – fkwiki.com : A knowledge-base for the Faculty of Medicine at UGM.
 * Flat Earth Wiki – wiki.tfes.org: The official Wiki of the Flat Earth Society.
 * Free Geek – wiki.freegeek.org :Free Geek, a nonprofit organization which puts unwanted computers back into use to benefit deserving volunteers and nonprofits.
 * Freephile Wiki – Freephile Wiki:Freephile Wiki is a site about free technology. It was started by Greg Rundlett of eQuality Technology.
 * Funtoo Wiki – www.funtoo.org : Official Funtoo Website/WIki
 * F-Zero Wiki – www.mutecity.org : A fun wiki about fun things like Web Comics, Internet Memes, Puzzles, Riddles, Jokes, Stories and Movies.

G

 * Gaiapedia – Gaia.Wikia.com : Community dedicated to documenting the largest English speaking forum on the internet. (GaiaOnline)
 * Game Ideas Wiki – gameideas.wikia.com :A wiki about ideas for video games, hosted on Wikia
 * Gamepedia – www.gamepedia.com/ :Collection of wikis about certain video games. Previously owned by Curse Media and Twitch. Owned by Fandom.
 * Gardenology – Gardenology.org : Gardening wiki and plant encyclopedia
 * Gearhead Wiki – GearheadWiki.com : Car Wiki
 * Geeklog Wiki – wiki.geeklog.net :For the open source CMS / weblog
 * Geni Wiki – wiki.geni.com : Wiki for Geni.com, a genealogy site.
 * Gentle Giant Home Page – www.blazemonger.com/GG :Rock band Gentle Giant
 * Gentoo Wiki – wiki.gentoo.org : Official Gentoo WIki
 * Geohashing Wiki – wiki.xkcd.com/geohashing/Main_Page : GPS-based adventuring
 * GhibliWiki www.nausicaa.net/wiki/Main_Page :A collection of information about Hayao Miyazaki and his works.
 * Globulation2 – globulation2.org :The game Glob2
 * GoMediaWiki – gomediawiki.com :Mediawiki skins and extensions
 * Grand Comics Database – docs.comics.org/wiki/Main_Page :Documentation for the web site database interface and error tracker
 * GridPP – https://www.gridpp.ac.uk/wiki/Main_Page :GridPP, UK Computing Grid for Particle Physics.
 * Guild Wars Wiki – wiki.guildwars.com :The official Guild Wars Wiki, information on all aspects of the MMO, Guild Wars.
 * GuildWiki – GuildWiki.org : a wiki guide for ArenaNet's Competitive Online RPG, Guild Wars.

H

 * Hard Drop – harddrop.com/wiki :Tetris Wiki
 * Hardware Book – www.hardwarebook.info :Cable and connector pinouts along with technical specs of computers and consoles.
 * HE FAQ faq.he.net :Information for Hurricane Electric customers.
 * Health++ – www.healthplusplus.com :HealthPlusPlus is a wiki about health, also a medical knowledge base, an online medical encyclopedia.
 * Health and Medicine Wiki – health-and-medicine.wikia.com : a Wiki about Health and Medicine, mostly written by Fuse809 (talk), hosted by Wikia. It, as of 15:17 28 Jan 2015 (UTC), has 920 pages and 950 files.
 * Helminthic Therapy Wiki – www.helminthictherapywiki.org: Everything you need to know about Worm therapy.
 * HeraldryWiki – www.ngw.nl: A wiki devoted to civic heraldry. More than 155000 images and 81000 pages as per 1/1/2018.
 * Hidden Palace – hiddenpalace.org :A wiki dedicated to releasing video game betas and demos
 * Hitchwiki – hitchwiki.org :Information about hitchhiking.
 * Homestar Runner Wiki – hrwiki.org :Knowledge-base about the cartoon series Homestar Runner
 * Hortipedia commons – commons.hortipedia.com :Media Repository – more than 20.000 pictures of plants
 * HostelManagement.com – Hostel Management Wiki :Community-written documentation and resources on how to start and manage backpacker hostels.
 * howtopedia.org – http://www.howtopedia.org :(en,fr,es) Howtopedia is a library for practical knowledge and simple technologies. It focuses on development tools.

I

 * ICANN Wiki – ICANNWiki.com
 * Icaruspedia – www.kidicaruswiki.org
 * Ifigenia – Ifigenia.org : Wiki for collaborative scientific research, development of educational content and partners networking in the areas of intuitionistic fuzzy sets and generalized nets
 * Illogicopedia – illogicopedia.org :A wiki for random humour, Illogicopedia is a wiki mostly dedicated to non-, semi- or entirely humorous surrealism (which might variously be considered clever, dumb, silly, or just plain nonsensical) and some satire.
 * InfoGalactic – Infogalactic: The Planetary Knowledge Core. Infogalactic is an Internet-based, free-content encyclopedia project that is a dynamic fork of Wikipedia and improves upon the online encyclopedia's model of openly editable content. Infogalactic's pages are interlinked in order to connect the user to related pages with additional information, and are categorized in a variety of ways, including Relativity, Notability, and Reliability to allow the user to prioritize his personalized perspective
 * Inkipedia – splatoonwiki.org :The wiki all about Nintendo's Splatoon franchise of video games and other media.
 * International Music Score Library Project – www.imslp.org :A virtual library containing public domain musical scores, as well as scores from composers who are willing to share their music without charge.
 * Internet Movie Firearm Database (IMFDB) – www.imfdb.org :A wiki listing the occurrences of different firearms in Film, Television and Video Games.
 * IRHB – International Robin Hood bibliography – www.irhb.org : A bibliographically oriented and research-based website covering all aspects of the Robin Hood tradition.
 * ISOGG Wiki – ISOGG Wiki :Genetic genealogy information from the International Society of Genetic Genealogy.
 * IIwiki – iiwiki.us :A wiki for roleplaying related to the online game NationStates.

J

 * J Wiki – code.jsoftware.com : J Programming Language
 * JavaScript Wiki – javascript.wikia.com :sufficiently interoperable ECMAScript
 * Jmol – Jmol wiki :Jmol is a Java molecular viewer for three-dimensional chemical structures.
 * Joomla! Documentation – docs.joomla.org :Joomla! is an award-winning content management system (CMS) used by millions of websites.

K

 * Kingkiller Wiki – kingkiller.wiki : Wiki for The Kingkiller Chronicle by Patrick Rothfuss
 * Kodi Wiki Manual – kodi.wiki :The online manual for Kodi® media center (formerly Xbox Media Center), the free open source (GPL) multimedia-player for the Xbox™ from Microsoft.
 * KoL Wiki – kol.coldfront.net : Information and spoilers for Kingdom of Loathing, a web-based MMORPG
 * Krass – krass.com :Techno in Barcelona, Germany and London.
 * Kreosite – kreosite.com :Information on all the Kre-o sets released by Hasbro

L

 * LabVIEW Wiki – labviewwiki.org :All about the LabVIEW graphical programming language
 * Libregamewiki – libregamewiki.org :Free as in freedom video gaming
 * LibriVox Wiki – wiki.librivox.org :LibriVox provides free audiobooks from the public domain.
 * LifeWiki – conwaylife.com/wiki :A collection of patterns and information about Conway's Game of Life
 * LIMSwiki – www.limswiki.org :laboratory, health, and science informatics encyclopedia
 * Lingua Veritas Lingua Veritas – Translation interpretation :A Wiki-based multilingual resources agency
 * Linux Questions – wiki.linuxquestions.org :A General Linux Self-service Technical Support Forum
 * Little Rock Renaissance – http://honors.uca.edu/wiki :All things Central Arkansas
 * Linux Shell Scripting Wiki – bash.cyberciti.biz :This tutorial is a beginners handbook for new Linux users / Sys admins and school students studying Linux or computer science.
 * Living Control – Livingcontrol.com :Information about Living Control and its products.
 * Lost Souls – wiki.lostsouls.org :A MUD with a wiki for its players and developers.
 * Lostpedia – lostpedia.com :A fan-maintained guide to the TV show LOST.
 * LOTRO Wiki – lotro-wiki.com : A Lord of the Rings Online fan-site.
 * LÖVE – love2d.org/wiki :The API reference for the LÖVE game engine.

M

 * Madde14/English – madde14.org/english :An online database on migration and asylum.
 * MagicaVoxel Community – mvc.wiki :Documentation and tutorials on the MagicaVoxel software
 * Marcely's Bedwars – :A wiki devoted to the Minecraft server plugin "Marcely's Bedwars"
 * Super Mario Wiki – Mariowiki.com :A wiki about Nintendo's Super Mario series.
 * MansonWiki – MansonWiki.com :A wiki devoted to industrial rocker Marilyn Manson and his eponymous band.
 * Martha Speaks Wiki – marthaspeaks.miraheze.org : Unofficial wiki for the children's sitcom Martha Speaks.
 * Marvel Comics Database – marvel.wikia.com/Main_Page :Marvel Comics information and image database
 * Mercury Rising Fanon Wiki – Mercury Rising Fanon Wiki :Fanon wiki for 1998's Mercury Rising and its expanded universe content
 * Met Wiki – MetWiki.com :The New York Mets players, seasons, games, trades, and other info
 * MetaBase – BioDatabase.Org :MetaBase is a user contributed database of databases, listing all the biological databases currently available on the internet
 * Metroid Wiki – www.metroidwiki.org/wiki/Main_Page :A wiki dedicated to Nintendo's Metroid franchise. The wiki contains in depth information on everything Metroid
 * MFBWiki – mfbwiki.org :Recording the history of Melbourne's Metropolitan Fire Brigade
 * Microwiki – micronations.wiki :The largest online encyclopædia about micronations, small and often rather eccentric nations that are unrecognised by the wider international community.
 * Minecraft Wiki (MCW) – minecraft.gamepedia.com : The Official Minecraft Wiki is a complete resource for Minecraft, including gameplay, blocks, crafting, redstone, updates, events, resource packs, mods, and tutorials.
 * Miraheze Meta – Meta: Meta coordination page for Miraheze wikis
 * MixesDB – MixesDB.com :Database for DJ Sets and tracklists
 * ML Wiki – mlwiki.org
 * Monoskop – monoskop.org : A wiki for collaborative studies of the arts, media and humanities.
 * Moodle Documentation – Moodle Docs :Documentation for Moodle, an open source educational course management system
 * MoparWiki – MoparWiki.com :The simple goal of becoming the single best source of anything having to do with Mopar cars and trucks
 * Mozilla Wiki – wiki.mozilla.org :Plans of software development of the Mozilla Foundation
 * Mozillazine Knowledge Base – kb.mozillazine.org :Semi-official knowledge base about Mozilla products
 * MPedia – mpedia.dan.info :A wiki encyclopedia on the subject of Mensa, the high-IQ society (An independent project not affiliated with, owned by, or endorsed by Mensa)
 * Multi Theft Auto – wiki.multitheftauto.com : A wiki devoted to the multiplayer Grand Theft Auto modification.
 * MusicProf – MusicProf.org :An Instrument For Music Notes
 * My Little Wiki – mylittlewiki.org :Dedicated to the My Little Pony toyline and cartoon series.
 * MyraPedia – myra.wikia.com :Create fantasy detail with art and stories in one of the oldest SharedWorld projects around the world Myra

N

 * NDTWiki – www.NDTWiki.com :Non Destructive Testing Wiki
 * Neverwinter – nwn.wikia.com :A Wikia that documents Neverwinter Nights.
 * NinWiki – ninwiki.com :Wiki for the band Nine Inch Nails
 * Nookipedia – Nookipedia :Animal Crossing wiki
 * Nordic Names – nordicnames.de :Origin and meaning of Scandinavian first names.
 * NSindex – nsindex.net :A general encyclopedia about NationStates, a browser-based nation simulation game.
 * NSwiki – nsindex.org :A general encyclopedia about NationStates, a browser-based nation simulation game.
 * NY Canals NY Canals.com :Information and cruising guide to the New York State Erie, Oswego, Champlain and Cayuga-Seneca Canals.

O

 * Objectivism Wiki – wiki.ojectivismonline.net :A wiki for Ayn Rand's philosophy of Objectivism
 * OCESS Wiki – wiki.spacesim.org :Wiki for the Ottawa-Carleton Educational Space Simulation
 * OEIS Wiki – oeis.org/wiki :Wiki for the Online Encyclopedia of Integer Sequences
 * Octopus Wiki – tddft.org :Software for the quantum simulation of the excited dynamics of molecules.
 * Offwiki – offwiki.org :Community dedicated to improving Wikipedia by discussing and testing ideas for onwiki adoption.
 * Old School RuneScape Wiki – oldschool.runescape.wiki :A large database containing information on the game Old School RuneScape.
 * OOModels – oomodels.org :An open library of modelling artefacts from the business and technical domain
 * Open Babel – openbabel.sourceforge.net :Open source chemistry library
 * Open Circuits – www.opencircuits.com :A wiki for sharing open source electronics knowledge, schematics, board layouts, ports and parts libraries.
 * Open Risk Manual – openriskmanual.org : A wiki aiming to produce a public knowledge base around risk management
 * Open Semantic Framework (OSF) Wiki – wiki.opensemanticframework.org :Wiki for the Open Semantic Framework open-source semantic technology software stack, including about 500 articles on technical aspects of installing, managing and using OSF, plus general semantic Web topics
 * Openbox – openbox.org :Openbox window manager
 * OpenMW – openmw.org :OpenMW is an open source reimplementation of the game Morrowind.
 * OpenSearch – opensearch.org :A9 open search standard development
 * OpenTTD – wiki.openttd.org :Game manual and development resource
 * OpenVZ – wiki.openvz.org :Documentation for OpenVZ – Operating system-level server virtualization, free software built on Linux
 * OpenWetWare – openwetware.org :An effort to promote the sharing of information, know-how, and wisdom among researchers and groups who are working in biology & biological engineering.
 * Organic Design Wiki – organicdesign.co.nz :Exploring OO, P2P & XML within the Wiki environment
 * OrthodoxWiki – orthodoxwiki.org :An open-content encyclopedia of Orthodox Christianity
 * OSDev – wiki.osdev.org
 * OS-Tan Collections Wiki – www.ostan-collections.net
 * OverSoul Wiki – oversoulwiki.com :The original wiki for Artix Entertainment's Flash Based MMO – OverSoul.
 * The OWASP Foundation – owasp.org

P

 * Presidential Polls – http://presidentialpolls-2016.com/ :The community-built resource that focuses on alternative, clean, practical, renewable energy solutions.
 * PCGamingWiki – pcgamingwiki.com :Information, tips, hacks and fixes for PC games.
 * PESWiki – peswiki.com/ :The community-built resource that focuses on alternative, clean, practical, renewable energy solutions.
 * PetroWiki – http://petrowiki.org :PetroWiki is integral to SPE’s mission as a vehicle to collect, disseminate, and exchange technical knowledge
 * Ph.D. Prep Track – phdprep.byu.edu :Provides information on earning an Accounting Ph.D.
 * Phyphox wiki - phyphox.org/wiki: Wiki to document phyphox.
 * Physlab – physlab.lums.edu.pk :The new website of the Experimental Physics Laboratory at School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan.
 * PidgiWiki – http://www.pidgi.net/wiki/ :the video game media repository
 * PinataIsland.info – http://PinataIsland.info :Dedicated to the Viva Piñata Xbox 360 game and television series
 * Planet Nepal http://www.planetnepal.org :Nepal Encyclopedia Project
 * Planet Plants wiki.PlanetPlants.org :The plants wiki. Information on plants, and a plants pictorial database.
 * Plant Encyclopedia (The) ThePlantEncyclopedia.org :The global guide to cultivated plants.
 * Pl@ntUse – uses.plantnet-project.org/en : useful plants of the world and their uses, a study case of Pl@ntNet plantnet-project.org
 * PLAWiki – PLA Wiki :Satire wiki about open source, established by PLA – Penguin Liberation Army
 * PlentyWiki – www.theplenty.net/wiki/ : Realm of the Elderlings and other creations of Robin Hobb/Megan Lindholm
 * Pokémon Wiki – pokemon.nintendork.org :A Nintendork Pokémon Encyclopedia
 * PonyVSPony Wiki – ponywiki.com :A wiki for Artix Entertainment's Flash Based PvP – Pony Vs Pony!
 * Pornopedia – en.pornopedia.com: Erotic encyclopedia
 * PortlandWiki – portlandwiki.org :Civic wiki for Portland, Oregon.
 * Poser and Daz Studio Free Resources Wiki – https://poserdazfreebies.miraheze.org/wiki/Main_Page :Links and descriptions of legally-free content for the 3D-art programs Poser and Daz Studio
 * Programmers' Society – progsoc.org :A society at University of Technology, Sydney
 * ProofWiki – ProofWiki.org :A dictionary of mathematical proofs.
 * Proteopedia – Proteopedia.Org : A collaborative, 3D encyclopedia of proteins and other molecules with >50,000 pages using the Jmol extension (java applet showing rotating molecules) and a molecular Scene Authoring Tool.
 * PsychWiki – www.psychwiki.com :Creating a collaborative resource and compendium of practical knowledge about psychological research.
 * Pub Night – Pub Night :A wiki dedicated to Real Ale pubs, primarily round Cheltenham but spreading slowly outwards.
 * PyMOLWiki – www.pymolwiki.org : Community support site for the molecular visualization program, PyMOL.
 * Pynchon Wiki – www.pynchonwiki.com :Explores all the novels of Thomas Pynchon – 6 wikis.
 * Pzwiki – www.pzwiki.net : A wiki for the indie game Project Zomboid.

Q

 * Qi Hardware – qi-hardware.com :Copyleft hardware project.
 * QuIRC Wiki – quirc.miraheze.org: Open Source, freely editable documentation for QuIRC.

R

 * RationalWiki – rationalwiki.org
 * RayWiki – raymanpc.com/wiki : Free encyclopaedia about Rayman
 * ReactOS Wiki – www.reactos.org/wiki :Wiki relating to the development and documentation of the ReactOS Operating System
 * RealCTY – RealCTY.org :About CTY, the Center for Talented Youth, especially its summer program.
 * RemyWiki – remywiki.com :Wiki about Konami's Bemani rhythm game series.
 * Rerxesis – Rerxesis.com :A free-content Encyclopedia about Anime, Manga, Light Novels and their related Media Adaptations.
 * RidgeRun Developer Connection – developer.ridgerun.com:Embedded Linux and GStreamer technologies.
 * RizonWiki – Rizon Wiki :Rizon Network's Knowledge based Wiki for FAQ and Information relating to the network.
 * RL3 Wiki – RL3 Wiki :RL3 language documentation, guides, examples.
 * Roblox Wiki – wiki.roblox.com :Teaches you how to Use, Play and Build on a free online Multiplayer game called Roblox.
 * RoboJackets – wiki.robojackets.org :A Georgia Tech student organization, engaging in BattleBots, FIRST, RoboCup, Intelligent Ground Vehicle Competition, and RoboRacing
 * Rodovid – rodovid.org : The généalogical three wiki.
 * RouteXL – routexl.nl :User manual for a multiple destinations route planner
 * RTAW Reefpedia – RTAW Reefpedia :Reefing the Australian Way Reefpedia, providing and information resource on the keeping of a marine aquarium for Australian hobbyists.
 * RuleML Wiki – RuleML Wiki :About the RuleML Knowledge Representation Language and the organization, RuleML, Inc., that develops it.
 * RuneScape Wiki – runescape.wiki :A large database containing information on the game RuneScape.

S

 * S1mp3 project – wiki.s1mp3.org :Information related to the S1 Mp3 Player
 * Saint Wiki – www.saintwiki.com :A free repository of Catholic resources.
 * SA-MP Wiki – www.wiki.sa-mp.com :The official page of SA-MP, a mod where you can play Grand Theft Auto San Andreas online with your friends.
 * sasCommunity.org – sasCommunity.org :The place for all users of SAS software to gather to share information.
 * Scan New England – Scan New England : Covering the radio communications hobby for the New England area of the USA.
 * Scioly.org/Wiki – : Covers Science Olympiad, a national held school competition.
 * ScottishClimbs – www.scottishclimbs.com :A site about climbing in Scotland.
 * ScoutWiki – en.scoutwiki.org :Free scouting encyclopedia in English.
 * Scramble – scramble.nl :All about aviation.
 * Scratch Wiki – en.scratch-wiki.info :A Wiki about the programming language Scratch.
 * SDIY wiki – sdiy.info :A wiki for learning about DIY electronic musical instruments and related equipment.
 * SDW (Sleeping Dragons Wiki) – sleepingdragons.org/sdw :Documents campaigns by Sleeping Dragons, a private tabletop roleplaying group.
 * Second Life – wiki.secondlife.com :Official Second Life's Wiki
 * Sega Retro – http://segaretro.org :Encyclopedia of Sega-related media.
 * Semantic Stargate Wiki – en.stargatewiki.noip.me:A semantic site dedicated to the Stargate franchise, using the Semantic MediaWiki extension.
 * ServerWiki – www.serverwiki.org :For Game Server Administrators, covers setup and installation of all different kinds of Game Servers on various Operating Systems.
 * Service Governance – www.service-governance.org :A site demonstrating the practical implementation of Service Governance, showing how the Service Portfolio draws together all business services
 * SgWiki – http://sgwiki.com/ :Singapore wiki, mostly about public transport there.
 * Shadowlack Codex – shadowlack.com/wiki :An original science fiction and fantasy world building (conworld) project.
 * Shartak Wiki – shartak.com :Web-based MMPORPG, set on a mysterious island where natives and outsiders hunt and explore.
 * ShoutWiki – shoutwiki.com:A network of MediaWiki with monobook and vector design.
 * Sikhi Wiki – sikhiwiki.org :Encyclomedia of the Sikhs
 * SklogWiki – www.sklogwiki.org :A physics wiki for the thermodynamics, statistical mechanics, and computer simulation of materials, community.
 * SKYbrary – www.skybrary.aero :The single point of reference in aviation safety knowledge.
 * SmashWiki – http://www.ssbwiki.com/Main_Page :A wiki for the Nintendo game franchise Super Smash Bros.
 * SME Server – http://wiki.contribs.org/Main_Page :Official wiki for the SME Server.
 * Smite Wiki – Smite Wiki :Wiki dedicated to Hi-Rez Studios online computer game SMITE.
 * Snickipedia&#x3A; The Lemony Snicket Wikipedia – www.snicket.wikia.com :This is Wikipedia, but it has been Snickified – a word which here means "remodeled to only have stuff to do with Lemony Snicket".
 * Social Media Wiki – SocialMediaWiki.net :A wiki hosting articles for YouTubers, Instagrammers, TikTokers and other social media creators.
 * Social Science Summary Database – adambrown.info/p/summaries :Collects summaries of scholarly books and articles, especially those relevant to political science.
 * Softview – SoftView.tk :Test site for MediaWiki and common extensions.
 * Sonic Retro – http://info.sonicretro.org/ :Encyclopedia of Sonic The Hedgehog-related media.
 * Source Watch – sourcewatch.org :Directory of the people, organizations and issues shaping the public agenda. Focus on propaganda (formerly "Disinfopedia")
 * Speedsolving.com Wiki – : Wiki of speedsolving combination puzzles
 * SporeWiki – sporewiki.com :Knowledge base dedicated to Spore – the computer simulation video game developed by Wright Will Wright
 * SpottersWiki – SpottersWiki.com :Guide to airport spotting and photography locations
 * Stadtwiki Karlsruhe – en.ka.stadtwiki.net :city wiki for Karlsruhe, Germany
 * Star Citizen Wiki – starcitizen.tools: an unofficial wiki dedicated to Star Citizen
 * Star Trek Online Wiki – STOWiki.org :Star Trek Online MMORPG Wiki
 * Starfy Wiki – starfywiki.org :Star Trek Online MMORPG Wiki
 * Stefan Zweig Bibliography Wiki – zweig.fredonia.edu :Stefan Zweig Bibliography Wiki
 * Stellarium Wiki – stellarium.org :Stellarium is a free planetarium for your computer
 * StrategyWiki – StrategyWiki.org :Collaborative source for copyleft video game FAQs, walkthroughs, and strategy guides.
 * Studius Wiki –
 * The official wiki of Studius, an aggregator site for student resources, extracurriculars, and productivity tools


 * Stunts Wiki – stunts.hu/wiki :Information, resources, history and whatever else related to the classic racing game Stunts (aka 4D Driving).
 * Substepr – Substepr.com :One of the first serious attempts at an open research website: Higher quality standards than WikiHow or eHow.
 * Sunshine Review – SunshineReview.org :An encyclopedia dedicated to open government through the sunshine of transparency.
 * Supernatural Wiki – www.supernaturalwiki.com: Wiki dedicated to The CW's TV series Supernatural.
 * Sweetnam.eu – sweetnam.eu :Personal website of a I.T. Technical nature.
 * en.Swpat.org – en.swpat.org :The software patents wiki
 * SynSIG – synsig.org :promote the study of Speech Synthesis in general.

T

 * Teaching Open Source – teachingopensource.org
 * A neutral collaboration point for professors, institutions, communities, and companies to come together and make the teaching of Open Source a global success.


 * Team Fortress Wiki – wiki.teamfortress.com : Wiki site for anything related to the videogame Team Fortress 2
 * Teampedia – www.teampedia.net/wiki/index.php?title=Main_Page
 * A collaborative encyclopedia of free team building activities, icebreakers, teamwork resources, and tools for teams.


 * Techotopia – Techotopia.org :A library of free on-line IT books
 * TechWriterWiki – TechWriterWiki.com :A practical on-line reference for professional Technical Writers/Communicators.
 * TeflPedia – TeflPedia.com :Wiki for English teachers.
 * Telarapedia – Telarapedia : A wiki for the MMORPG Rift: Planes of Telara.
 * Terraria Wiki – wiki.terrariaonline.com/ : The official Wiki for Terraria.
 * Admin tools Test Wiki – testwiki.wiki : A wiki where anyone can become a admin and test their rights. Skins and Extensions can be requested.
 * TFWiki – TFWiki.net : Knowledge database dedicated to the various Transformers characters, episodes, comics, and toylines.
 * The Aquarium Wiki – The Aquarium Wiki : The encyclopedia of all things aquatic.
 * The Bytecode Wiki – The Bytecode Wiki : An encyclopedia for Java Development & Reverse Engineering.
 * The Chemistry Book – The Chemistry Book: An online chemistry textbook.
 * The Cutting Room Floor – The Cutting Room Floor: A wiki dedicated to finding unused and cut content in video games.
 * The Infosphere – theinfosphere.org :A wiki for all Futurama related info.
 * The Internet Wiki – theinternetwiki.com: An encyclopedia of the things that run and maintain the internet, the people behind the internet, and ideas, controversies, laws, etc. that concern the internet.
 * The IT Community – www.theitcommunity.com :The wiki knowledge base from IT guys, for IT guys.
 * The Mana World – The Mana World Wiki : TMW is a 2D MMORPG. Wiki document gaming and development aspects.
 * The May Day Mystery – maydaymystery.com: Investigation of a mystery in the Arizona Daily Wildcat
 * The Mickey Wiki – The Mickey Wiki :Unofficial encyclopedia on everything Walt Disney World
 * The Pet Wiki – The Pet Wiki :Info about pets and how to care for them.
 * The Science Archives – thesciencearchives.miraheze.org :Science encyclopedia based on Wikipedia
 * The Spaghetti Western Database – www.spaghetti-western.net:The biggest English-language encyclopedia of European Western Cinema
 * The TTSCpedia – wiki.therofl98.co:The official Text-to-Speech Community Wiki for documentation on Text-to-Speech Voices and content based around them.
 * The Wiki Fire – The Wiki Fire : The unofficial, free encyclopedia of Knox College in Galesburg, IL
 * Theobio Wikis at McMaster University – Projects; Dushoff Lab; Worden : Over 100 wikis for research collaborations. Home of the WorkingWiki extension for wikis supporting collaborative coding and authoring of publication-quality manuscripts
 * Theories Used in IS Research Wiki – is.theorizeit.org


 * ThirdMesh-ThirdMesh.com:The 3D printing in Medical Devices wiki
 * ThinkWiki – thinkwiki.org :Linux distributions on IBM/Lenovo ThinkPads
 * This Might Be A Wiki – tmbw.net :Wiki for all things They Might Be Giants
 * Tolkien Gateway – tolkiengateway.net :Currently the largest encyclopedia about J.R.R. Tolkien and his works.
 * Total Commander Wiki – www.ghisler.ch/wiki :Knowledge base for Total Commander, famous file manager software for Windows
 * Trail WIKI – TrailWIKI.org : A collaboration of trails across the United States.
 * Trailville – trailville.com : Hiking Trails, Cross Country Ski Trails, Bike Paths, Mountain Bike Trails, and Canoe & Kayak Water Trails.
 * Trauma and Dissociation project – www.dissociative-identity-disorder.net :A wealth of information about the mental disorders caused by trauma
 * TSR Wiki – thestudentroom.co.uk :The Student Room, Information for students
 * TV Channel Lists – tvchannellists.com : Channel listings of cable, satellite, IPTV and over-the-air around the world.
 * The TV IV – tviv.org :An online compendium of television knowledge
 * TelenovelaWiki – telenovelawiki.com :Read full information on thousands of Telenovelas.

U

 * UBC Wiki – UBC Wiki : The University of British Columbia Wiki.
 * ukcider – ukcider.co.uk/wiki :A wiki about different types of cider and perry.
 * ukdiy – wiki.diyfaq.org.uk :Frequently Asked Questions for the uk.diy Newsgroup
 * UKGameshows – ukgameshows.com :Information on British television and radio game shows and people associated with them
 * Uncyclopedia – en.uncyclopedia.co and uncyclopedia.ca :Satirical parody of Wikipedia, see Uncyclopedia.
 * Uncyclomedia – uncyclomedia.org/: Uncyclopedia project coordination


 * Unified Republic of Stars – unifiedrepublicofstars.com/wiki :A collaborative story telling project based around a new and unique science-fiction world.
 * Uniting Amendment – Uniting Amendment :The comprehensive amendment to the Constitution written by the citizens of the United States
 * Unofficial Elder Scrolls Pages (UESP) – uesp.net :The wiki about the Elder Scrolls series of games.
 * UOGuide – UOGuide.com :An encyclopedia on the MMORPG Ultima Online
 * Urban Dead Wiki – wiki.urbandead.com : A Massively Multi-Player Web-Based Zombie Apocalypse. MMPORPG.

V

 * Valve Developer Community – developer.valvesoftware.com :Information about Valve's SDK and Tools
 * Vanipedia – vanipedia.org/wiki/Main_Page :is a dynamic, interactive encyclopedia of all the teachings of Śrīla Prabhupāda – The founder Acharya of the Hare Krishna movement who taught the science of devotional service rendered to God.
 * VenueSpecs – venuespecs.org: Technical specifications for venues around the world.
 * Video Game Music Covers Wiki – video-game-music-covers.wikia.com :A wikia about VGM Cover Artists
 * Video Game Music Preservation Foundation Wiki – vgmpf.com
 * The Vim wiki – vim.wikia.com :A wiki dedicated to the cross-platform Vim editor
 * Visual KoL – kol.coldfront.net/thekolwiki/index.php/Main_Page :Information about the online role-playing game, Kingdom of Loathing.
 * The Free Voyeurweb's Wiki System – Voyeurweb's Wiki :It is a richly pictured and fully searchable interactive knowledge base base done by the Voyeurweb community for the Voyeurweb community. This Wiki system grows every hour as more and information, text and pictures are added by people like me and you
 * vtiger CRM – vtiger Wiki :Documentation project for the vtiger CRM business users and developers

W

 * Wackypedia – wackypedia.risteq.net : Surrealist/humor encyclopedia
 * Wazeopedia – wazeopedia.waze.com : Multi-language knowledge base of Waze map editing community.
 * WebPlatform – docs.webplatform.org : Community-driven site that aims to become a comprehensive and authoritative source for web developer documentation.
 * WeRelate – werelate.org : The world's largest genealogy wiki
 * Wesnoth – wiki.wesnoth.org :Website and wiki for the Battle for Wesnoth project, a free turn-based strategy game
 * Where to See Wildlife – wheretosee.org/wildlife/Main_Page :A website dedicated to finding the best locations to see wildlife.
 * WICWiki – www.wicwiki.org.uk :Christian website which contains over 25,000 articles, covering a variety of subjects.
 * Wiki24 – 24.wikia.com :Everything there is to know about the hit television series 24
 * Wiki4Games – Wiki4Games.com : A wiki about video games.
 * WikiAlpha – wikialpha.org: A wiki designed to be an inclusive encyclopedia covering diverse topics.
 * WikiApiary – wikiapiary.com : Wiki about MediaWiki websites
 * WikiCU – wikicu.com: A wiki dedicated to Columbia University
 * WikiChip – WikiChip.org :A computer-related knowledgebase
 * WikiDifferences – WikiDifferences.com : A difference-between manual.
 * WikiDoc – wikidoc.org : A medicine textbook wiki.
 * WikiDr – wikidr.net : The Doctor Directory that anyone can edit.
 * WikiDrivers – Wikidrivers :Device drivers for video, sound, storage, networking and input devices, chipsets and CPUs.
 * Wiki Farming – wikifarming.org :A Manual on Agriculture
 * Wiki by IndraStra – en.indrastra.com/wiki/: A wiki with restrictive-access for internal document referencing across IndraStra Global publications.
 * Wikifashion – wikifashion.com :Where fashion lovers can catalogue clothes, designers, shows and all things fashion.
 * WikiFur – wikifur.com: A wiki dealing with the Furry community and culture
 * WikiGTA – WikiGTA.org : Grand Theft Auto Walkthrough
 * WikiIndex – wikiindex.org : An index of wikis and related concepts
 * WikiIslam – WikiIslam :Online resource with articles on various areas of Islam based on its own sources, the Qur'an, hadith and Islamic scholars.
 * WikiKrishna – www.wikikrishna.com: Wiki of Hindu vedic scriptures, songs, lyrics, etc.
 * WikiLectures – www.wikilectures.eu: Online study materials for medical students.
 * WikiHTP – wikihtp.com : A How-To-Program Tutorial.
 * WikiLou – www.wikilou.com :A collaborative wiki about St. Louis, Missouri and the surrounding area.
 * WikiMANNia – en.wikimannia.org :wiki site dedicated to the knowledge of discrimination.
 * WikiNoah – www.WikiNoah.org :Welcome, newcomers to WikiNoah. Everything worthwhile to know about the Bnei Noach movement. The Online Encyclopedia about the Noahide movement created by observant Noahides and Jews.
 * WikiPathways – WikiPathways.org :Biological pathways curated by the scientific community.
 * Wikipedia Quality – wikipediaquality.com :portal about concepts, researches and services related to quality assessment of the Multilingual Wikipedia.
 * Wikipunch – Wikipunch.com :Encyclopedia of events and users from the forum site, Facepunch
 * Wikireedia – wikireedia.net :Academic and general interest site
 * WikiRun – wikirun.com :A running encyclopedia.
 * Wikishire – wikishire.co.uk: A wiki about Britain, Ireland and the British territories.
 * Wiki-site – wiki-site.com:Wiki-Site.com allows you to open and manage a free wiki site.
 * WikiSkuare – wiki.bskuare.com :WikiSkuare deals with hidden histories, secret societies, case histories of murders etc.
 * Wikisocion – wikisocion.org : Encyclopedia of socionics
 * WikiSummary – WikiSummary : Summaries of Academic Books and Articles
 * Wikiwrimo – wikiwrimo.org :A wiki for everything related to National Novel Writing Month, Script Frenzy, and the Office of Letters and Light.
 * Wikizilla – wikizilla.org : Wiki about Godzilla, King Kong, Gamera, and other giant monsters.
 * Wireless Africa – wirelessafrica.meraka.org.za :Home of the CSIR, Wireless Africa, Community Owned Information Network.
 * Without Vowels – withoutvowels.org :Site for researching all meanings of Old Testament without vowels.
 * Wixpert – www.Wixpert.com :A commercial encyclopedia wiki that lets writers make money for their work.
 * Wookieepedia – starwars.wikia.com:Wiki about Star Wars run by Wikia
 * WordPress Codex – codex.wordpress.org :Online Manual for WordPress
 * World Wind Wiki – worldwindcentral.com :Knowledge base about NASA's World Wind
 * Wowpedia – Wowpedia.org :The game World of Warcraft, by Blizzard Entertainment.
 * WikiMauritius – wikimauritius.org :Everything about Mauritius

X

 * XFamily – Children of God – xFamily.org :a collaboratively edited encyclopedia about The Family/Children of God cult.
 * XeNTaXWiki – wiki.xentax.com :The world's largest repository of Game Resource Archive Format (GRAF) information. Expanding to non-GRAF formats as well.
 * XMLTV GUI Wiki – birtles.org.uk :Documentation for the XMLTV GUI grabber
 * XMSWiki – xmswiki.com :Help and documentation for XMS software (GMS, SMS and WMS).

Y

 * YourSexWiki – Yoursexwiki : Illustrated Wiki Project about all aspects of sexuality
 * Yo-Yo Wiki – yoyowiki.org :Information about the toys called Yo-yo
 * Yugipedia – Yugipedia.com : A wiki about the Yu-Gi-Oh! franchise

Z

 * Z64 Wiki – wiki.spinout182.com :N64 Zelda hacking wiki.
 * Zelda Wiki.org – Zelda Wiki.org :A group effort of several fan sites to cover the games of The Legend of Zelda series.
 * Zelda Dungeon Wiki – zeldadungeon.net

MediaWiki-ready hosts

 * Hosting services