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 Open MediaWiki Sites by Andrew Palo 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: 2006-02-11
 * (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.

#

 * 2012 Wiki - 2012Wiki.com :Information center covering all aspects of the 2012 doomsday meme.
 * 26Blue - 26Blue.com :Kitchen Remedies, Home Cures, Natural Cures, Granny Remedies, Folk Medicines, Elixirs, Tonics, Foods that Heal
 * 43FoldersWiki - wiki.43folders.com :Productivity and time management practices, "life hacks and other smart heuristics", and more!
 * 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.
 * 624 Squadron Wiki - 624squadron.org :Royal Air Force (Special Duties) Squadron engaged in covert activities during the Second World War (1943 - 1945).
 * 866 Area Codes - 866areacodes.com :Reverse lookup for 1-866 phone numbers, suspicious telephone numbers and nuisance callers.
 * 877 Area Code - 877areacode.com :Toll Free 1-877 phone numbers reverse lookup, lookups of unknown telephone numbers including collection agencies and telemarketers.
 * 888 Area Code - 888areacode.com :Reverse lookup 1-888 numbers, list of suspicious telephone numbers including collection agencies and telemarketers.

A

 * AAISP — wiki.aa.org.uk: Wiki for the ISP Andrews & Arnold Ltd.
 * AiroPedia — airbrushwiki.ru: AiroPedia - The free encyclopedia of airbrushing and art.
 * Achievo.org - achievo.org :Documentation of the open source projects Achievo, Achievo ATK and Achievo WDE.
 * AdCiv.org - AdCiv.org : Advanced Civilization and post-scarcity enabled by open-source design and engineering
 * Addictipedia- Addictipedia.com : Comprehensive drug information, addiction advice and treatment resources.
 * AQWorlds Wiki - aqworldswiki.com :The original wiki for Artix Entertainment's Flash Based MMO - AdventureQuest Worlds.
 * Agar Wiki - Agar Wiki :For users and developers of the Agar open-source GUI library.
 * AIDS Wiki - AIDS Wiki :AIDS dissident website
 * AJS.COM - AJSWiki :Personal site; gaming topics; mushrooms and mycology
 * Align Toolkit- Outperform :The Align Toolkit is a series of guides to the best practice methods in PRINCE2, P3M3 and Risk Management.
 * Alfresco - Alfresco.org :Document Management System
 * 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.
 * American History Research Wiki - WikiAmerica : Directory of primary sources useful for students of American History.
 * Amazing Print Web to Print - Web to Print : Web to Print directory.
 * Amusement Wiki - editthis.info/Amusement :Wiki created entirely for fun. It should not be taken seriously!
 * Anarchopedia - Anarchopedia :Anarchopedia is an open knowledge-portal and online anarchist community.
 * Anime-Wiki.org - en.anime-wiki.org :Open anime encyclopedia
 * Antique Jewelry University - antiquejewelryuniversity.com :A jewelry history wiki.
 * Appropedia - appropedia.org :Library of appropriate technology, with textbook style topics and how-to style projects.
 * AQ3D Wiki - AQ3dwiki.com :The original wiki for Artix Entertainment's Flash Based MMO - AdventureQuest 3D: Legend of Lore.
 * Aquaticdatabase - aquaticdatabase.com : A database aimed at aquarists. Previously a database of the phylum cnidaria
 * ArchivesWiki archiveswiki.historians.org : A directory of archival institutions around the world.
 * Archlinux - wiki.archlinux.org :Linux wiki
 * Area51 Archives - area51archives.com : A hacking culture documentation project
 * Argumentrix - Argumentrix.com: A wiki of opnions, arguments and rebuttals
 * ARIN IPv6 Wiki – www.getipv6.info :IPV6 topics and issues
 * Armadeus - Armadeus.org : Open & embedded Linux systems development
 * Armeniapedia - armeniapedia.org :Information about Armenia
 * ASCEND - ascendwiki.cheme.cmu.edu :A free mathematical modelling program for science and engineering.
 * AsianWiki - asianwiki.com :Database of Asian films, television shows, performers, and filmmakers.
 * AskDrWiki - askdrwiki.com :A Medical Wiki for practicing physicians, residents, and medical students.
 * Assela Pathirana - assela.pathirana.net : Random Ravings
 * Assothink m3m.homelinux.org/wikiMC : Associative thinking model and demonstration (Note: "?uselang=en" can be appended to the end of the URLs until they get their wiki configured for English.)
 * Atorapedia - atorapedia.worldofatoria.com :A collaborative group constructed world-building project
 * Auburn University at Montgomery - wiki.aum.edu :The university's wiki page for technology support.
 * Axaptapedia - axaptapedia.com :Microsoft Axapta programming tips
 * Ayushlaya Open Health-Ayushlaya: Ayushlaya open health care projects.

B

 * Bahaikipedia - bahaikipedia.org :An encyclopedia for topics relating to the Bahá'í Faith
 * Ballotpedia - ballotpedia.org :An encyclopedia for ballot measures and initiatives.
 * Baltimore Ravens Wiki - ravensgames.com : An encyclopedia for the American football team Baltimore Ravens
 * Bartender's Database - bartendersdatabase.com :Wine, beer and spirits
 * Baseball Reference Bullpen baseball-reference.com/bullpen
 * Battlestar Wiki - battlestarwiki.org :Battlestar Galactica episode and character guides (original and new series).
 * 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.
 * Best Wireless Router Wiki - bestwirelessrouter.com/wiki :Wiki site for wireless routers
 * Bhamwiki - bhamwiki.com :Documenting the Birmingham District (Alabama, USA)
 * Biblebase.com - wiki.biblebase.com :A one stop Bible resource site.
 * BibleWiki - bible.tmtm.com :An on-going project to build a user-created free scholarly commentary to the entire text of the Christian Bible.
 * BibleWiki - biblewiki.us :An open bible resource with encyclopedia and commentary.
 * Bickerpedia - Bickerpedia.com :An encyclopedia of all things controversial.
 * Big Wall Climbing Wiki- bigwalls.com/wallwiki :A site where climbers can upload big wall information.
 * Binary Options Wiki - binaryoptionwiki.com :Binary Options Wiki - Binary Options Trading Pedia
 * 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.
 * BioSites - BioSites.org :BioSites.org is an openfree information provider of companies or web sites. You can freely add and edit your site's profile anytime.  BioSites.org will help introduce your websites and provide external links and references that can enhance and increase traffic to your site, and connect you with your visitors.
 * Bitcoin Wiki - bitcoin.it
 * Black Vault Encyclopedia Project - www.theblackvault.com :Encyclopedia relating to UFOs, Paranormal, Conspiracy, and Government Cover-Ups
 * 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
 * BluWiki - BluWiki.com :Free MediaWiki web host
 * The BLWiki - www.bluelight.ru :A harm reduction wiki aimed at safer drug use.
 * Boobpedia - Boobpedia.com :Encyclopedia of women with big boobs. Includes busty celebrities, models, adult performers, and amateurs.
 * Border Regiment Wiki - border-regiment-forum.com/wiki: A wiki about the British Regiment between the years 1881-1959.
 * The Bookbag - Bookbag.co.uk :Fiction, biography, crime, cookery and children's book reviews.
 * Botwiki - Botwiki :Development and testing of bots and bot scripts, particularly those used to edit mediawiki sites.
 * Brewwiki - www.brewwiki.com :How to make your own beer.
 * Bromwiki - www.bromwiki.net :Information on the tropical pineapple plant family.
 * Brony Music Wiki - :Brony Musicians.
 * 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
 * Big Bang Theory Wiki - wiki.the-big-bang-theory.com :A fans' alamanc for the TV Series "The Big Bang Theory".

C

 * C# Online.NET - en.csharp-online.net : Wiki-based C# and .NET reference of articles, forums, and tutorials.
 * Cabal Online - cabalwiki.com:Comprehensive game information
 * Camera-wiki - camera-wiki.org : A non-commercial encyclopedia of cameras and photography, successor to Camerapedia.org
 * C&amp;C Modding Encyclopedia - ModEnc.RenegadeProjects.com :A project to provide one central source of modding knowledge for the Command &amp; Conquer series of games
 * CGNotebook - www.cgnotebook.com :A wiki for all things related to Computer Graphics.
 * CGS Publishing Technologies Int'l - http://support.cgsusa.com/wiki :A a collaborative effort to spread knowledge of color management and process improvement using ORIS Color Tuner//Web, ORIS Press Matcher//Web and ORIS Certified//Web.
 * Chiki - Chiki.info :Fan wiki for the CHERUB series by Robert Muchamore.
 * Children's Books Wiki - Children's Books Wiki : A Wiki dedicated to children's books.
 * China Liaoning Business Guide Wiki - velopment.de : General and business information about Liaoning Province in Northeast China.
 * Chinese Grammar Wiki - : Chinese grammar resource
 * CineWiki - www.cinewiki.org : The free film Encyclopedia
 * Cinoku - en.cinoku.com :Film lexicon
 * CIRLWiki - cirl.missouri.edu :Wiki/Website for the Computational Intelligence Research Lab at the University of Missouri - Columbia
 * Citizendium - en.citizendium.org :The Citizens' Compendium
 * City Deep Sky Project - www.citydeepsky.com : Astronomy information and list of deep sky objects visible from inside a city.
 * Claypedia - www.clayaikenwiki.com : Claypedia - The wiki dedicated to Clay Aiken
 * Claystation Claypedia - www.claypedia.com : Claystation Claypedia - A community based online encyclopedia for the field of Ceramic Arts.
 * 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.
 * CoastalZone | ZonaCostera | KüstenZone | FrangeCôtière | KustStrook | .Info :Community site with relevant and on-time information, useful for the integrated management of the coastal zones of our world. Integrated development is everybody´s business!
 * Club Penguin Fanon Wiki - fanon.clubpenguinwiki.info :A proudly independent and ever-growing Club Penguin storytelling database!
 * Club Penguin Wiki - clubpenguinwiki.info :A free, editable wiki about Club Penguin.
 * Code Snippets Wiki codesnippets.wikia.com :A wiki-compatible syntax code guide, hosted by Wikia
 * Collaborative Landscape - CollaborativeLandscape.org :Site devoted to research, practice and education in landscape architecture, urban design and planning
 * Colorado Hiking Trails - coloradohikingtrails.net :Hiking trail reviews, trailhead directions, topos and articles covering hiking trails in Colorado
 * Combine OverWiki - combineoverwiki.net :A wiki covering the Half-Life and Portal game series
 * Combined Community Codec Pack - cccp-project.net :Information and help for video playback in general and CCCP solutions in particular.
 * Communityhealth.in - Communityhealth.in: A resource on community health and the Health For All movement in India put together by people actually working in the field.
 * CommunityPages.org - Community Pages :A community website dedicated to providing a web presence for local events and issues.
 * Conbledegook - The Conbledegook File :Alex Holden's glossary of Eastercon-related jargon.
 * Conservapedia - Conservapedia :A conservative Christian Wiki encyclopedia.
 * Consumerium - develop.consumerium.org :Fair trade, political consumerism, and moral purchasing trends
 * Cookopedia - en.cookopedia.org/wiki/index.php/Main_Page :The best place about cooking.
 * Cooperative Linux Wiki - wiki.colinux.org/ :Wiki for developers focused on the Cooperative Linux (CoLinux) project
 * CopperWiki - www.CopperWiki.org :LOHAS (life style of health and sustainability) network
 * CoPress - CoPress Knowledge :Wiki about tools and knowledge for college media.
 * Corkipedia - corkipedia.com :News and History for Cork City and County
 * Crazy Hacks - crazy-hacks.org :Crazy software- and hardware-projects of geeks all around the world
 * CreationWiki - creationwiki.org :Encyclopedia of creation science
 * Creative Commons - wiki.creativecommons.org :Compendium of development information for Creative Commons tools
 * Crossroads MUSH - www.crossroadsmush.com :Setting and theme information for Crossroads MUSH, a text-based roleplaying game
 * Cruising and Sailing Wiki - World Cruising and Sailing Wiki :An online world cruising guide.
 * CryptoDox - cryptodox.com: Encyclopedia on cryptography and information security
 * CS Wiki- cs.calstatela.edu/wiki/ :A wiki used in the Computer Science Department at California State University, Los Angeles.
 * Cultura Apícola - http://www.culturaapicola.com.ar :La Enciclopedia de Apicultura - Encyclopedia of beekeeping.
 * Cumulopedia - clouds.wikia.com/wiki/ :A nephology/meteorology encyclopedia.
 * Cunnan - cunnan.sca.org.au :Information for re-enactors of the Middle Ages and Renaissance
 * Cutting Room Floor, The - wiki.rustedlogic.net :The Cutting Room Floor is a site dedicated to unearthing and researching unused and cut content from video games.
 * CyanogenMod Wiki - wiki.cyanogenmod.com :A wiki for the CyanogenMod Community project.
 * 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

 * D2K5 - d2k5.com/wiki/ :Website about faggotry
 * Darkeens Battlefield - darkeen.homelinux.com :Personal Website about roleplaying, both Tabletop and Electronic.
 * Deadhardrive Data Recovery in China- :Information and company blog about data recovery in china.
 * D&D Wiki - dandwiki.com :A collection of Dungeons and Dragons material both homebrewed and SRD.
 * DamsWiki - damsulegna.net :Documentation and user manual's for the mIRC Client Dams2k4 and IRC game DamsIRPG.
 * Dan's Computer Services Wiki - dcscdn.com :Technology and Computer Information and Support.
 * Daria Wiki - dariawiki.org :Information about the MTV series and its fandom.
 * DartWiki - dart.m12.in :The Un-Offical DartMUD wiki!
 * David Spencer's Canadian Inukshuk - Ca.Davidspencer.ca :An educational portal helping Canadians and our friends around the world better understand what forms our Canadian identity. Includes significant Canadian buildings, documents, events, expressions, groups, inventions, persons, places, programs and symbols.
 * David Spencer's Education Paragon - Education.DavidSpencer.ca :A free educational resource portal helping Ontario, Canada based secondary school students, parents and teaching colleagues with understanding and applying assessment, communication, curriculum design, curriculum planning, curriculum delivery, evaluation and literacy skills accurately and effectively.
 * David Spencer's History of Ontario Communities - On.DavidSpencer.ca :An educational portal recording the human history and natural history of selected communities both past and present located in the province of Ontario, Canada.
 * David Spencer's Media Spin - Media.DavidSpencer.ca : The journal of David M.R.D. Spencer's observations about the work, ministry and goals of Canadian media workers who are Christian and Canadian media history, present trends and media convergence.
 * DayZ Wiki - dayzwiki.com :Tips, guides, and information for DayZ, a zombie survival mod for the game ArmA II.
 * Debatepedia - debatepedia.org :The Wikipedia of Debate using logic-tree methodology
 * DCDatabase - dcdatabaseproject.com :DC Comics information and image database
 * Dedupe Project - tickett.net/dedupe/ :Open Source Fuzzy Matching & Deduplication Project
 * DeskTux - desktux.nl :Linux on desktops
 * Detective Conan Wiki - detectiveconanworld.com/wiki/ :The ultimate resource about Detective Conan.
 * Devil Dogs, USA - Devil Dogs, USA :a website for gamers.
 * Diatessaron wiki - Diatessaron.ir : A wiki about Diatessaron Gospel and anything related.
 * Diffen - Diffen.com :An encyclopedia of comparisons and differences.
 * Digital Media Wiki - Digital Media Wiki :Aiming to be a massive guide to online advertising and marketing.
 * Directgov Wiki - Directgov Wiki :Wiki of contacts for UK government
 * DireKtion - DireKtion :Wiki for the DireKtion sattelite navigation project.
 * Dirtopia - dirtopia.com :The free off-road encylopedia
 * DishiWiki - DishiWiki.com :Where everyday cooks share recipes and talk about cooking and food
 * Discourse DB - discoursedb.org :a database of political commentary, including print and online sources
 * Discriminating Employer - discriminatingemployer.com :Against discrimination in the workplace
 * 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
 * DNSRBL.org - dnsrbl.org :DNS blacklist and spammer fighting information source
 * Do-You-Know - do-you-know.jbdirectory.com: A concise encyclopedia, catering to the needs of those of us who have difficulties reading more than 5 minutes online.
 * Docunext.com - docunext.com :Wiki of technical and open source software information
 * DolceSF - dolcesf.com :Wiki of asthma related symptoms and information on popular procedures.
 * Dolibarr - Dolibarr ERP & CRM wiki :All users and developers documentation of Dolibarr OpenSource project.
 * Donut Plains Wiki - donutplains.net/wiki :Mario, Yoshi, Donkey Kong, Wario, and Super Smash Bros. series wiki.
 * DoomWiki.org - doomwiki.org :The Doom video game series.
 * DOS Games Compatibility Wiki - wiki.classicdosgames.com :Compatibility knowledgebase for running DOS games on modern computers
 * Drive the Americas - drivetheamericas.com : A guide for travelers driving in North, Central, and South America
 * DssWiki - www.DssWiki.net :The online Satellite Encyclopedia!
 * DragonFable Wiki - dfwiki.com :A wiki for Artix Entertainment's Flash Based Web RPG - DragonFable.
 * Dreamhost - wiki.dreamhost.com :Customer wiki for the webhosting company Dreamhost
 * DueWiki - www.duewiki.com :A wiki dedicated to local and historical resources for Real Estate Due Diligence researchers.
 * DunedinShopping.co.nz Wiki - Dunedin Shopping Wiki :A wiki associated with a virtual tour of the main pedestrian shopping district in Dunedin, New Zealand
 * 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.
 * DwarfWiki - http://www.observationdome.org/wiki :A Wiki dedicated to the BBC2 Sci-Fi show, Red Dwarf.
 * Dystopia Wiki - www.dystopia-game.com/wiki :A project dedicated to providing information about the Dystopia modification of Half-Life 2.
 * DuraLwazi - www.duralwazi.org :An encyclopedia of what directly and indirectly relates to Zimbabwe, a Southern African country.

E

 * e107 - e107.org :e107 is a content management system written in php and using the popular open source mySQL database system for content storage. It's completely free and totally customizable, and in constant development.
 * E-studij.si e-študij.si :Slovenian student's notes from faculty's lectures
 * 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
 * Edutech Wiki http://edutechwiki.unige.ch/: Educational technology, hosted at TECFA, University of Geneva.
 * Edwiki edwiki.co.uk :Edwiki is a city wiki used as a knowledge base for Edinburgh.
 * Einstein University - : The Free University/ Academic Social Network.
 * Ekopedia - en.Ekopedia.org: The encyclopedia of ecology. The project is part of http://www.ekopedia.org
 * EggeWiki - theeggeadventure.com/wiki: Brian Egge's coding tips and scrapbook
 * Electoral Reform - ElectoralReform.Wikia.com: Voting Systems and Electoral Reform
 * Embedded Linux - elinux.org: Embedded Linux Developers and Users wiki.
 * Emo Speedway Wiki - Emo Speedway Wiki :Historical Information on the Emo Speedway
 * Encyclopedia Dramatica - : Encyclopedia dedicated to humor, satire, trolling, and the documentation of notable online drama and memes. (See Encyclopedia Dramatica.)
 * Encyclopedia Magnetica - Encyclopedia-Magnetica.com:Encyclopedia of magnetics: from theory and physics, through technologies, materials, sensors, to application in science, medicine, everyday life and more.
 * EOFFTV - http://www.eofftv.com/eofftv/ :a database of horror, science fiction, fantasy and animated film and television
 * Esolang - Esolangs.org
 * EvoWiki - cotch.net :Evolution education, biology, and origins. Repository for mainstream scientific responses to common intelligent design and creationism arguments.
 * Exlom - Exlom.com :Exlom is a help for italian investors...
 * explain xkcd - explainxkcd.com :dedicated to explaining the popular webcomic xkcd

F

 * Fanra's EverQuest Wiki - everquest.wikkii.net :EverQuest game information.
 * FerryPedia - www.ferrypedia.com :A knowledge database on ferries and ferry operators.
 * 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
 * Firefall - firefall-wiki.com :a wiki for Red 5 Studios Upcoming free-to-play Tactical Shooter - Firefall.
 * FishPi - wiki.fishpi.org :FishPi : An Autonomous Drop In The Ocean. Design & build a transatlantic autonomous vehicle, controlled by the Raspberry Pi, and powered by solar energy.
 * FIRSTwiki - www.firstwiki.net :Website to share information on FIRST
 * FIXwiki - fixwiki.org : a Wiki dedicated to the FIX protocol
 * FFXIclopedia - http://wiki.ffxiclopedia.org :THE Source for Final Fantasy XI information.
 * FlatRedBall - FlatRedBall.com Wiki :Documentation covering the FlatRedBall Game Engine and general game development information.
 * Flight Instructor Wiki - cfi-wiki.net :Information and Resources for Flight Instructors and their students.
 * FlyerWiki - en.flyerwiki.net :All about flying and travelling
 * Folding@Home - Folding@Home :Folding@Home is a distributed computing project aimed at understanding protein folding, misfolding, and related diseases.
 * Foreclosurepedia - Foreclosurepedia :User contributed foreclosure wiki for the REO/Property Preservation industry
 * Free Geek - wiki.freegeek.org :Free Geek, a nonprofit organization which puts unwanted computers back into use to benefit deserving volunteers and nonprofits.
 * FreeGameDevWiki - wiki.freegamedev.net :Open source game development wiki.
 * Free Wifi Spotr - freewifispotr.com :Directory of free wifi hotspots and free internet access locations worldwide.
 * Funtoo Wiki - www.funtoo.org : Official Funtoo Website/WIki
 * Fusion Wiki - Fusion Wiki :Wiki for Clickteam Products
 * Future Worlds - Future Worlds :Wiki for all Future Worlds Center ideas, people, projects, products etc.
 * eFlyFF Wiki - flyff-wiki.gpotato.com: Your guide into the world of Madrigal.

G

 * G37-Tech - G37-Tech.com : An Infiniti G37 Information Site.
 * Gaiapedia - Gaia.Wikia.com : Community dedicated to documenting the largest English speaking forum on the internet. (GaiaOnline)
 * Galbijim Wiki - http://wiki.galbijim.com : Information on South Korea, specifically from the point of view of the expat in the country.
 * Game Programming Wiki - gpwiki.org : game programming tutorials and source code for a variety of languages and platforms.
 * GameWinners - GameWinners.com : Uneditable cheat code website.
 * ganfyd - ganfyd.org : Resource for medical professionals
 * Gardenology - Gardenology.org : Gardening wiki and plant encyclopedia
 * Garry's Mod Wiki - wiki.garrysmod.com : Wiki about Garry's Mod - FPS Source game
 * Geeklog Wiki - wiki.geeklog.net :For the open source CMS / weblog
 * Geni Wiki - wiki.geni.com : Wiki for Geni.com, a genealogy site.
 * GenieWiki - www.digitization.org :For the three games using the genie engine - Age of Empires, Age of Kings and Star Wars: Galactic Battlegrounds
 * Gentle Giant Home Page - www.blazemonger.com/GG :Rock band Gentle Giant
 * Gentoo Wiki - wiki.gentoo.org : Official Gentoo WIki
 * Gentoo-Wiki - gentoo-wiki.com : Gentoo linux community
 * GFWiki - gfwiki.co.cc : Index of places that provide for Wheat and Gluten allergy sufferers
 * GhibliWiki www.nausicaa.net/wiki/Main_Page :A collection of information about Hayao Miyazaki and his works.
 * GingerWiki - GingerWiki.com : Local services such as plumbers or dentist with tables of prices.
 * GishanWiki - wiki.gishan.net : GishanWiki is a collection of university reports and projects.
 * Glen Cook Wiki - www.glencook.org : Author Glen Cook Reference Site
 * Globulation2 - globulation2.org :The game Glob2
 * GLOKAL-Marketing - www.glokal-marketing.eu : A wiki forum for marketing people
 * Global Web Security Systems Support Wiki - wiki.gwebs.com : Both a support wiki for Global Web Security Systems' MailCloak software, and an educational wiki about encryption.
 * GoMediaWiki - gomediawiki.com :Mediawiki skins and extensions
 * GoSustainable Documentation Repository - doc.gosustainable.org : A documentation wiki for the GoSustainable organization.
 * Government and Social Media Wiki - GovSM : A wiki tracking the use of social media by government.
 * Grand Theft Wiki - GrandTheftWiki.com :A wiki about the Grand Theft Auto series.
 * Greekopedia - www.Greekopedia.com :A wiki about college fraternities and sororities.
 * Green Computing - Green Computing Wiki :A wiki about reducing computer energy consumption.
 * GridPP - wiki.gridpp.ac.uk :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.
 * Gungfu Dojo - Gungfu WikiDojo Listings :The Online Resource of Martial Arts Schools, Training Centers, and Dojos throughout the world and the USA.
 * GuyanaWiki - GuyanaWiki.org :Guyana is an english speaking country in South America with information and photos on its wildlife, environment... A free CD project based on it is given out to schools and libraries.

H

 * Hack to live - hacktolive.org/wiki :Website dedicated mainly to software, especially open-source. Home of App Runner, Super OS, RUNZ, and other tools
 * Halo Mod Maps Wiki - Halomodmapswiki.tk :Wiki for Halo Mod Maps.
 * Hardware Book - www.hardwarebook.info :Cable and connector pinouts along with technical specs of computers and consoles.
 * Handsley - handsley.com :Free Graphical IT solutions wiki. Share your knowledge here.  From desktop support, networks to server configuration.
 * Hardware-wiki - Hardware-wiki :Articles of common computer hardware components focused partly on Linux users
 * Hardwood Investments Wiki - wiki.hardwood-investments.net :A wiki about investing in teak plantations and other hardwood/forestry investments
 * Hattrick Wiki - wiki.hattrick.org :Encyclopedia concerning the online football manager game www.hattrick.org
 * Hay Interiors - hayinteriors.com.au:Comprehensive soft furnishing business
 * HE FAQ faq.he.net :Information for Hurricane Electric customers.
 * Home Remedies - www.findhomeremedies.net :Find Home Remedies that have been tried and proven themselves.
 * Health++ - www.healthplusplus.com :HealthPlusPlus is a wiki about health, also a medical knowledge base, an online medical encyclopedia.
 * Health and Wellness - health.jbdirectory.com : Health and wellness, a blessing that money cannot buy. A personal journey to become more health-conscious through knowledge.
 * Health Knowledge Base - HealthKB.org :Health Knowledge Base about Mind, Body, and Environment.
 * Help For Shepherds - helpforshepherds.org :A site to help supply resources for Christian pastors.
 * HeroSmash Wiki - herosmashwiki.com :A wiki for Artix Entertainment's Flash Based MMO - HeroSmash.
 * Heron Academy Wiki - HeronAcademy.com/Wiki :Internet marketing related encyclopedia.
 * HexWiki - hexwiki.org :General information about the board game of Hex. Includes many strategy topics.
 * Hifi-Wiki.com - www.hifi-wiki.com: A free database for all kinds of hifi products
 * High School Alumni - www.hsalum.com :For graduates of United States-based high schools to keep up with one another
 * Hitchwiki - hitchwiki.org :Information about hitchhiking.
 * Hollywood Cliches - HollywoodCliches.com : User ratings of Hollywood films on their political bias.
 * Holoprosencephaly.net - www.holoprosencephaly.net : Offers information about holoprosencephaly and the care of a child with HPE
 * Honey MP3 Music - HoneyMP3.com :HoneyMP3.Com is the music blog. We give you daily updates of iTunes, Amazon.. music that you can download completely free.
 * HomeInspectionWiki - HomeInspectionWiki :Resources for home inspectors and inspections, including industry terms, photos of terms, standards of practice, etc.
 * Homestar Runner Wiki - hrwiki.org :Knowledge-base about the cartoon series Homestar Runner
 * HondaWiki - hondawiki.com :A wiki dedicated to owners of Honda's
 * HookahWiki - www.hookahwiki.com :Knowledge-base for Hookah and Shisha related information.
 * Horological Wiki - clockmakers.archivist.info :Encyclopedia of all thats horological
 * Hortipedia - en.hortipedia.com :garden encyclopedia, plants, plant database
 * 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.
 * HostPedia Wiki - HostPedia Wiki: Knowledge-base about web hosts and servers. This Community based wiki site contains information, guides and documentation about web hosting.
 * How Happy - HowHappy.org :Provides a forum where users can voice how happy they are with nearly anything.
 * How Shall We Then Live? - HowShallWeThenLive.com :Knowedge base and information site regarding the question of life, death, how to live, how one should live, observations on life, the living, ways to live, why we should live or die and all the interesting questions we have while alive about life itself.
 * How to Meet Broads - A Comprehensive Guide to the Art of Seduction - How to Meet Broads :A site dedicated to helping men meet and seduce the women of their dreams. Includes an encyclopedia of female celebrities ranging from actresses to musicians to athletes.
 * howtopedia.org - http://www.howtopedia.org :(en,fr,es) Howtopedia is a library for practical knowledge and simple technologies. It focuses on development tools.
 * Hurghada-Apartment.com - www.hurghada-apartment.com :A site for accomodation near Hurghada on the Red Sea Riviera.
 * Hymns Without Words - www.hymnswithoutwords.com :Hymns Without Words is a resource of downloadable recordings of hymns and carols that are suitable for use in services.
 * Hurrchan Wiki - www.hurrchan.net :A wiki of funny articles for entertainment.
 * HelioHost - wiki.helionet.org :Articles related to HelioHost and it's services for HelioHost customers.

I

 * International Guide to Avoid Dying - IG2AD.com :This Website aims to be a general reference for all the things you should know if you are ever in a survival situation.
 * ICANN Wiki - ICANNWiki.com
 * IDN wiki - ICANN TLD I18N :Eleven internationalized test TLD s
 * 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
 * iFilmConnection.com - iFilmConnection.com :Independent film maker's resource center. Information on film making, guerrilla film tactics, how to's, directing, producing, lighting, financing, and more.
 * Illapedia - illarion.org :Illapedia is your source for information about the free MMORPG Illarion
 * 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.
 * ILoveDrink.com - ilovedrink.com :Pub and club reviews and alcohol information!
 * iMarketingGuru.com - iMarketingGuru.com :The SEO/SEM 3.0 Wiki illustrating all tactics of site and link building as well as traffic generation.
 * Indianetzone - Indianetzone.com :Information on India on various topics
 * IndiaPosters - IndiaPosters.com :A Collection of India posters...Movies, Maps, Places etc...
 * Industrial Design Wiki - industrialdesignwiki.com :An Industrial Design resource listing links and descriptions for those links to useful resources for Industrial Designers.
 * infoAnarchy Wiki - infoanarchy.org :Information related to file sharing, copyright, the gift economy, cyber liberties, peer to peer research, information tools, and similar topics
 * InfoEng.SourceForge.net - infoeng.sourceforge.net : Open source software to create digital financial instruments with digital information as the underlying asset.
 * International Brotherhood of Rail Riders - www.ibrr.org :IBRR is a classified wiki dedicated to the hobo community
 * 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.
 * Interuniversal - editthis.info/Interuniversal :A wiki for the science fiction project Doom Crisis.
 * Invader Zim Wiki - the-mu.net or themu.5gigs.com/wiki :A compendium of Invader Zim knowledge, transcripts, and fan things.
 * Invertebrate Wiki - wiki.bidabug.org :Catalogue and Discussion of Invertebrates in Nature & Care in Captivity.
 * IpbWiki - www.ipbwiki.com :Integration of Invision Power Board with Mediawiki.
 * iPodLinux - ipodlinux.org :The main documentation and development information resource for the iPodLinux project.
 * iPornWiki - www.ipornwiki.com :The new definitive porn wiki of our generation. Think of this as the wikipedia of porn.
 * ieXbeta Wiki - iexbeta.com :ieXbeta's wiki is about operating systems and software applications.
 * iamdogWiki - iamdogWiki :iamdogWiki is to be a collaborative effort to develop a true political party platform for "normal" people, not the fringes in both directions. (link doesn't work)
 * IRC Wiki - IRCWiki.org
 * IRC-Forums - irc-forums.com :Mainly about philosophy
 * Irenic Clan Wiki - irenic.ws :Information wiki for the Irenic RuneScape clan and related RuneScape topics run by the clan community
 * isaacpedia.com - isaacpedia.com :Isaac's Wiki. Genereal information about interesting topics.
 * ISBTwiki - webapptst.lasalle.edu/wiki :Wiki for the Integrated Science, Business and Technology (ISBT) Program at La Salle University in Philadelphia, PA  USA.
 * Islamic E Books - islamic-e-books.com :Free islamic Books to download.
 * IslandWiki - IslandWiki.com :Caribben island information by travelers, for travelers.
 * ISOGG Wiki - ISOGG Wiki :Genetic genealogy information from the International Society of Genetic Genealogy.
 * ITwiki - stevens.edu/itwiki :The Stevens Institute of Technology's Information Technology documentation website.
 * Information on Meditation - http://www.meditationinfo.net : This website explains every aspect of meditation in detail.

J

 * Jajuk - jajuk.info : Jajuk is software that organizes and plays music. It is a fully-featured application geared towards advanced
 * Janapar - Janapar :Janapar is the trail leading trekkers and hikers through Karabakh. users with large or scattered music collections.
 * JavaScript Wiki - javascript.wikia.com :sufficiently interoperable ECMAScript
 * Johor-Bahru-Directory - johor-bahru-directory.com : The Encyclopedia of Johor Bahru
 * Jewel Dragon Wiki - jeweldragon.com : Jewel Dragon is a match-3 puzzle RPG for iPhone and iPad.
 * Jmol - Jmol wiki :Jmol is a Java molecular viewer for three-dimensional chemical structures.
 * Johor Bahru Insurance - johor-bahru-insurance.com: Information on life and general insurance in Malaysia in general and Johor Bahru in particular
 * Jonathan Park Wiki - JPwiki :A wiki that explores the radio drama called Jonathan Park
 * Journalists' Workspace - Journalists' Workspace :Closed wiki for use by Wikinews accredited reporters working on embargoed and investigative reports
 * Judgepedia - judgepedia.org : An encyclopedia for Judges at all court levels.

K

 * K12wiki - myshortpencil.com :Pre-K-12 U.S. public school project
 * K12LTSP - K12ltsp.org : A software distribution packaging Fedora and CentOS Linux with the Linux Terminal Server Project (LTSP) software, tailored for use in schools
 * Kalim - Kalim :Collective intelligence focused on the Word of God.
 * Katrina Help - KatrinaHelp.info :Community assistance for victims of hurricanes Katrina and Rita
 * Know the Words - knowthewords.net :Music & Lyrics
 * Knowledge Base Case Study - KBCaseStudy.info :Paper presented at Red Hat Summit 2009.
 * kekePower - wiki.kekepower.com : kekePowers Information By-Way
 * Kenya.or.KE -kenya.or.KE : The Kenya we know - the Free Kenyan encyclopedia that anyone can edit. A Wiki about the country Kenya
 * Kerneltroubleshootomatic - kerneltroubleshootomatic.co.nr :Computer knowledge base with wiki and forum.
 * KidsPersonalFinance - Kids Personal Finance :Guide to help kids and parents learn how to handle their personal finances
 * Kis-Lev - kis-lev.com :The collaborative website of Israeli artist Jonathan Kis-Lev, including pictures of his naive paintings
 * KneeQuickie - wiki.penguindeskjob.com:Conlanging, ZBB-community
 * Know Home Schooling - knowhomeschooling.com : Home Schooling Guide
 * Knoxville Tennessee Wiki - knoxvilletennesseewiki.com : Life, Business and Organizations in Knoxville, Tennessee
 * KoL Wiki - kol.coldfront.net : Information and spoilers for Kingdom of Loathing, a web-based MMORPG
 * kpopwiki - kpopwiki.com : Asian music
 * Krass - krass.com :Techno in Barcelona, Germany and London.
 * Kunkelfruit Wiki - Kunkefruit Wiki : The web home for collaborative articles about how popular products are made.
 * KUpedia - WiKUpedia (soon to be KUpedia.org) : A wiki run by students at the University of Kansas
 * K-Wiki - K-Wiki : Project management tools

L

 * LabVIEW Wiki - labviewwiki.org :Dedicated to the LabVIEW programming language.
 * LANETO Wiki – wiki.international-cv.net.org: (EN) Wiki on new service developments. Results of desk research and market studies, but also user manuals and course outlines for services are made publicly available.
 * Law Delta- lawdelta.org :All laws of the world.
 * Lawvolution - www.lawvolution.com :Extensive legal information - including case research tools and course outlines - for the public, law students, and practicing attorneys.
 * League of Legends Complete Wiki- completelol.com :Wiki about the MMO League of Legends: Clash of Fates.
 * LegacyView- www.LegacyView.com :LegacyView Dictionary of World Biography
 * Lehigh Engineering Heritage Initiative - www.lehigh.edu/heritage :Database of biographies of successful members of the Lehigh University engineering community
 * LeicesterTalk Wiki- Leicester Forum and Wiki :Wiki about Leicester News, Jobs, and goings on. Installation with a Vbulletin 4 bridge.
 * LibidoGuru - LibidoGuru.com :Questions and Answers about sex, including sex and relationships, Safe Sex and Birth Control and Breastfeeding
 * Libra - webbed.org/libra :A collaborative novel
 * 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
 * Lilisto's Wiki - wiki.lilisto.com :Lilisto personal bookmark manager's help section
 * LimeWire - wiki.limewire.org :LimeWire's website and wiki
 * Lingua Veritas Lingua Veritas - Translation interpretation :A Wiki-based multilingual resources agency
 * Line Zone - line-zone.com/wiki :Wiki for the young linerider fansite-forum
 * Linuxconfig.org - linuxconfig.org :The the free Linux knowledge wikiportal
 * Linux Questions - wiki.linuxquestions.org :A General Linux Self-service Technical Support Forum
 * Link Building Wiki - Link Building Wiki :Link Building and Link Popularity
 * LinksCiti - LinksCiti.com :A wiki link directory separated into thousands of topics.
 * List Here - listhere.com :Classified ad wiki.
 * 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.
 * List of Goals - listofgoals.net :A list of goals and methods to achieving them.
 * List of Wiki - List of Wiki :A collection of thousands of lists about everything and anything.
 * Listing ASCII Arts! - raduofficialpage.xp3.biz/listingasciiarts/index.php/ :Collection of ASCII arts. This is a wiki where you can send ASCII art.
 * LiteratePrograms - literateprograms.org
 * Living Control - Livingcontrol.com :Information about Living Control and its products.
 * LiquidsWiki - liquidswiki.com :Equipment for Handling and Processing Liquids.
 * LogMeIn Wiki - LogMeIn Wiki :Wiki with articles about LogMeIn software.
 * Lost Souls - 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.
 * LoveToKnow - lovetoknow.com :A wealth of information on various topics - every field has its own wikipage
 * LURKMORE - lurkmore.com :database for chanchan and 4chan and all imageboard/internet related information
 * LyricWiki - LyricWiki.org :Over 200,000 songs w/no annoying banners or pop-ups.
 * Lyriki - The Lyrics Wiki - lyriki.com :Lyrics site
 * Live with Yoga - http://www.livewithyoga.net : At Live with Yoga, you can experience peace and also contribute in spreading peace through path of yoga.
 * Lylat Wiki - starfoxwiki.org : Star Fox.

M

 * MCommerceWiki - MCommerceWiki.com :List of M-Commerce solutions, service providers and common practices.
 * Macedonia Wiki - Macedonia Encyclopedia :Mediawiki powered Macedonia Wiki, with a beautiful skin!
 * Madde14/English - madde14.org/english : An online database on migration and asylum.
 * MapleStory - BrandonFrohs.com :Wiki to help players of the MMORPG MapleStory.
 * Marketing Online - Marketing Online Statistics and Tools : Digital marketing statistics and Internet Marketing Software Tool compilation by Dave Chaffey
 * Super Mario Wiki - Mariowiki.com :A wiki about Nintendo's Super Mario series.
 * Magic Sanctum - Magical Wiki encyclopedia project :Devoted to the complete indexing and central archive of magic, magicians, illusions, and everything magical arts related!
 * Mahalo - Mahalo.com : Search Engine
 * MakeHijra - MakeHijra.com : Guide on Moving to a Muslim Country
 * Malawi360 - Malawi360.com :Living, working and tourism in Malawi
 * Malaysia - Malaysiafactbook.com: The Encyclopedia of Malaysia
 * Mandriva Community Wiki - mandriva.vmlinuz.ca :A community website for Mandriva Linux users
 * Mankatopedia - mankatopedia.com :Wiki about the city of Mankato, Minnesota, USA.
 * MansonWiki - MansonWiki.com :A wiki devoted to industrial rocker Marilyn Manson and his eponymous band.
 * MarvelDatabase - marveldatabase.com :Marvel Comics information and image database
 * Martial Arts - Martial Arts Wiki - WikiMartialArts.org: Online information and resource for Martial Arts, Karate, Kungfu, Mixed Martial Arts, Wrestling, Jui-Jitsu, Grappling, Judo, Weaponry, History of Martial Arts, Traditonal Shaolin, General Instruction, Dojo School Listings and much more.
 * MasonWiki - MasonWiki.net :For students, by students, a wiki for all things George Mason University-related
 * Material Project - MaterialProject.org :a wiki catalog of materials, products, and buildings for the architecture and interior design community.
 * Mathematical Trading and Finance - Mathematical Trading and Finance :Based around the MSc course available at Cass Business School, London
 * MechQuest Wiki - mqwiki.com :A wiki for Artix Entertainment's Flash Based Web RPG - MechQuest.
 * Mediawiki Users Group - www.mediawikiusers.com : For MediaWiki users, administrators and developers, a resource to enhance the content of MediaWiki.org. Provides a forum for help with a specific topic, generalized FAQs and HowTos, and more.
 * Medicalopedia - Medicalopedia Homepage : The medical encyclopedia for medical personnel.
 * Medical Assistant - Medical Assistant : Resources for becoming a medical assistant.
 * Meditorworld - meditorworld : a collection of user-created meditor worksheets
 * MeetYourAncestry - MeetYourAncestry : For family historians to preserve oral histories, share information, photos and documents, and discover the individuals behind their family trees.
 * Men of War - Wiki - www.menofwarwiki.com : The unofficial community-wiki on the real-time strategic video-game "Men of War"
 * 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!
 * MetallicaWiki - MetallicaWiki.com : A wiki about heavy metal band Metallica.
 * Metroid Wiki - Metroid Wiki : 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
 * MicraWiki - wiki.micra.org.uk :A place where people can come and post their progress and news on all things Micra.
 * Micros Systems - wiki.micros.com/wiki: Official documentation for their latest products. (Site is restricted via logging in to their website.) They also use MediaWiki for internal documentation and employee collaboration.
 * Middleton-StJohns - Middleton-StJohns :Genealogy and literary site makes extensive use of DPL and interwiki links
 * Million Artists (Translations) - wiki.millionartists.com :Translations for Million Artists - abstract art fundraising project
 * Minecraft Wiki - Minecraftwiki.net :A wiki dedicated to gathering useful information related to Minecraft, a Java-based computer game created by Notch.
 * MineZ Wiki - MineZwiki.net :Strategic information source for MineZ, the multiplayer zombie apocalypse game-mode for Minecraft inspired by DayZ.
 * Macalester Public Knowledge Base - mpkb.net : A Public Knowledge Base for organized activism, led by Macalester students in Minnesota.
 * MixesDB - MixesDB.com :Database for DJ Sets and tracklists.
 * MMOnlineWiki - MMOnlineWiki.com :Wiki containing information about MMORPGs.
 * ModEnc - ModEnc.RenegadeProjects.com :An Wiki collecting all modding information regarding Command&Conquer series.
 * Monoskop - burundi.sk/monoskop : A collaborative wiki research on history of media art and culture.
 * 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.
 * Motorsports Wiki - WikiMotorsports.org :The definitive online guide to all things motorsports, powersports, auto, motorcycles, motocross, supercross, speed racing & anything with an engine.
 * Mozilla Wiki - wiki.mozilla.org :Plans of software development of the Mozilla Foundation
 * Mozilla Developer Center - developer.mozilla.org : Mozilla Developer documentation. (Now uses different wiki software)
 * Mozillazine Knowledge Base - kb.mozillazine.org :Semi-official knowledge base about Mozilla products.
 * Mono Project - www.mono-project.com : Cross platform and open source implementation of Microsoft .NET framework
 * Mountwiki - mountwiki.com : Wiki containing information about mountains and routes
 * 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.)
 * Mt633 Wiki mt633.redirectme.net/wiki : Personal Wiki for Zach Harris mostly on math, computing, and theology.
 * MTG Archive - mtgarchive.net : A library of information related to the Magic: The Gathering collectible card game
 * MusicProf - MusicProf.org : An Instrument For Music Notes
 * MuslimWiki (Mw) MuslimWiki.com :The open encyclopedia on Islamic Subjects and the Muslim world from the Muslim perspective.
 * Mustangpeak Wiki Help - wiki.mustangpeak.net : Help for Mustangpeak.net software and components
 * MusicDocz - MusicDocz.com/wiki : Very Useful for Musicians and Music Lovers. Song Information including many lists of complete recordings by various Artists.
 * My Research Wiki - research.chanur.com :Genealogy research notes
 * myElectrical - myelectrical.com : Electrical Engineering Wiki!
 * MyErasmus - MyErasmus.org : Obtain information and share knowledge with other Universities, students or teachers about the Erasmus Programme
 * MyraPedia - MyraPedia.eu : Create fantasy detail with art and stories in one of the oldest SharedWorld projects around the world Myra.
 * Mystiki - Mystiki :A resource on western and eastern mysticism and mystical societies.
 * MyTownWiki - MyTownWiki : Communities collaborating to document their ongoing history, local culture, and comprehensive information about their area.
 * MyWikis – MyWikis : A free wiki host.
 * Mascot Wiki - MascotWiki : The first wiki for mascots & fans featuring up to date information and every mascot has a photo on there page!

N

 * NSDL - wiki.nsdl.org : National Science Digital Library
 * NDTWiki - www.NDTWiki.com :Non Destructive Testing Wiki
 * Nashvillelife - www.nashvillelife.org :Living information about Nashville, TN, USA
 * NativeWiki - www.nativewiki.org :Native and Indigenous Peoples Wiki
 * NamelessWiki - www.namelesswiki.com :A wiki dedicated to hacking, social engineering and secure computing
 * NavyHPSP.net - navyhpsp.net :Navy Health Professions Scholarship Programs student collaboration.
 * Narciki - wiki.neely-chaulk.com :Naval Architecture wiki
 * NeoNoodles - www.neonoodles.com :Parenting advice and information
 * NetPedia - Netmunity.com :The great free encyclopedia of Netmunity - The Great Internet Community
 * NetworkDictionary - wiki.networkdictionary.com :Information sharing on the IT, Networking, Telecom and Computer fields
 * Network for the Study of Archaic and Classical Greek Song www.let.ru.nl/greeksong : International network devoted to the study of lyric, elegiac and iambic poetry in archaic and classical Greece
 * Neverwinter - nwn.wikia.com :A Wikia that documents Neverwinter Nights.
 * New Start Ministries Church Wiki - newstartministries.org :An effort by New Start Ministries Church in San Francisco to allow collaboration when developing every Sunday service
 * New York City Electronic Music Collective - nycemc.ajbnet.com :A site devoted to the re-connection of the New York electronic music scene.
 * Nexopedia - wiki.nexoscms.org :A wiki dedicated to the NexOS CMS
 * NHS Choices Wiki - NHS Choices wiki :A wiki containing events related to the NHS (National Health Service)
 * NikkiWiki - nikkiwiki.com :Online Pornstar Encyclopedia
 * Nintendo-Scene - wiki.nintendo-scene.com :A collection of tutorials guides and information on the hacking and modification of Nintendo consoles.
 * NinWiki - ninwiki.com :Wiki for the band Nine Inch Nails
 * Nissan 350Z & 370Z Wiki - www.350z-tech.com :Info on the Nissan 350Z and a few other cars.
 * NSwiki - ns.goobergunch.net :A Wikipedia-style encyclopedia for the online game NationStates
 * Novell Developer Wiki - developer.novell.com/wiki/ :Novell developer wiki
 * NursingWiki - NursingWiki.org :knowledge-database for nursing and health care information
 * NetNovinar - wiki.netnovinar.net :Edithorial Ethics for online journalists Wiki.
 * Neptune Pink Floyd Neptune Pink Floyd - :A collective encyclopedia for the band Pink Floyd
 * Node, The The Node - :A collective database for the fictional sci-fi universe of 'Transit'.
 * NY Canals NY Canals.com - :Information and cruising guide to the New York State Erie, Oswego, Champlain and Cayuga-Seneca Canals.
 * Naturecure India - http://www.naturecureindia.info : Website on alternate therapy system for curing.
 * NWO Promisance InfoWiki - NWO Promisance : Text based game that utilizes a wiki to give the user information on how to play the game.
 * Nordic Names - nordicnames.de :Origin and meaning of Scandinavian first names.
 * Numberzoom - numberzoom.com :Reverse phone number lookup, Caller ID lookup and list of unknown telephone numbers including collection agencies and telemarketers.

O

 * Oberwiki - oberwiki.net :Wiki for anything and anyone related to Oberlin College and the town of Oberlin, Ohio.
 * Objectwiki - objectwiki.sciencemuseum.org.uk :Wiki for objects in the Science Museum in London, UK.
 * Objectivism Wiki - wiki.ojectivismonline.net :A wiki for Ayn Rand's philosophy of Objectivism
 * Ocean Wiki - www.oceanru.com/wiki :Wiki for anything and anyone related to Hidden Knowlege.
 * 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.
 * Ogre3D - www.ogre3d.org :Free open source 3D graphics engine library.
 * Old-Computer Wiki - compact-mac.110mb.com :Wiki about old computers and stuff (we haved moved to a new host!)
 * Old Dogs Rock - olddogsrock.com :Sharing information about how to keep our aging and ill dogs healthy and happy.
 * Onekopakaspace Wiki - theoks.net/~onekopaka/wiki/ :A Wiki made for fun & collaboration.
 * Online Marketing Wiki - www.onlinemarketingwiki.com/wiki/ :A Wiki about online marketing
 * ooBdoo - www.oobdoo.org :Center for popular information of all kinds.
 * 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 Clip Art Library Wiki - http://www.openclipart.org/wiki :Wiki for the Open Clip Art Library Project
 * Openbox - openbox.org :Openbox window manager
 * OpenDarwin - opendarwin.org :Open source Darwin project
 * OpenID.net - openid.net wiki :OpenID development and status
 * OpenGameForge.org - www.opengameforge.org :Free open source game and mod development community.
 * Open Game Wiki - www.opengamewiki.com :Open Game Wiki for maintaining an encyclopedia on all available games.
 * OpenGovProject.org - OpenGovProject :Collaborate with us in providing information about the politicians that hold office, their various positions, the functions of their office, and how to make a difference.
 * OpenMW - openmw.sourceforge.net/wiki :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
 * OpenTutorial - www.OpenTutorial.com :Tutorials About Everything by Anyone
 * 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
 * OrbLyrics - orblyrics.com :An English wiki of Japanese artists' and bands' lyrics in Romaji and English translations.
 * OrthodoxWiki - orthodoxwiki.org :An open-content encylopedia of Orthodox Christianity
 * Omnimaga PrizmWiki - prizmwiki.omnimaga.org :A source for Casio Prizm development info
 * OSDev - wiki.osdev.org
 * OSDevices - osdevices.org :Because devices deserve open source
 * Our College Notes - ourcollegenotes.com :Wiki for students to create one perfect notebook for every class.
 * OutHistory.org - OutHistory.org :The website on lesbian, gay, bisexual, transgender, queer, and heterosexual U.S. history that anyone with data and sources can edit: History of the Community, for the Community, by the Community
 * OverclockingWiki - OverclockingWiki.org :Overclocking information plus the software to overclock and run on your overclocked system.
 * OverSoul Wiki - oversoulwiki.com :The original wiki for Artix Entertainment's Flash Based MMO - OverSoul.
 * OZONE Wiki - ozone.game-host.org :Wiki about the 3D-Oxyd called OZONE
 * Orbit of Information - orbit of information :This web portal gives up to the minute updates on the modern technologies.

P

 * Pale Ravens - http://wiki.paleravens.com:An all-era Vampire storyworld and play-by-wiki freeform RP (hosted by MysteryAndMagic.com).
 * Pan Greece - Greece Wiki :A Wiki all about Greece
 * PC-BSD Wiki - wiki.pcbsd.org :A wiki for PC-BSD, an easier to use more heavily GUIfied operating system based upon FreeBSD.
 * Peacecorpswiki - peacecorpswiki.org/ :Any Peace Corps info
 * PESWiki - peswiki.com/ :The community-built resource that focuses on alternative, clean, practical, renewable energy solutions.
 * PGN - PGN Wiki : PGN's Community Wiki
 * Ph.D. Prep Track - phdprep.byu.edu :Provides information on earning an Accounting Ph.D.
 * 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 Pokémon media repository
 * PilotGigs - pilotgigs.info/pgwiki :Database about pilot gig racing
 * PinataIsland.info - http://PinataIsland.info :Dedicated to the Viva Piñata Xbox 360 game and television series
 * PinkWiki - pinkpinero.net/wiki :Current and historical archive for the Pink Pinero guild.
 * Planet Nepal http://www.planetnepal.org :Nepal Encyclopedia Project
 * 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
 * PlasticsWiki - Plastics Wiki :The wiki about plastics & polymers
 * PLAWiki - PLA Wiki :Satire wiki about open source, established by PLA - Penguin Liberation Army
 * PlentyWiki - thePlenty.net : A wiki about the Realm of the Elderlings and other works by Robin Hobb/Megan Lindholm
 * Point Omega Research - wiki.omega-research.org :A wiki about the coming Point Omega transition
 * PokéFriends - PokéFriends : A wiki for PokéFriends.
 * Political Wiki - Political Wiki : Political Wiki is for U.S. Political information along with any outside organizations that are linked to U.S. Politics in any form.
 * 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.
 * Pouya Animation Wiki - thepa.wikinet.org :Pouya Animation Foundation's user wiki.
 * Programmers' Society - progsoc.org :A society at University of Technology, Sydney
 * ProofWiki - ProofWiki.org :A dictionary of mathematical proofs.
 * Project Powder Wiki - www.projectpowderpro.com :A wiki for the game Project Powder.
 * 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.
 * Public Domain Ideas - PDI :Ideas and inventions that go into the public domain so they can't be patented.
 * 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.
 * Pyrowiki - www.pyrowiki.com :How to make fireworks, flash powder, black powder, rockets, aerial shells and more...
 * Pzwiki - www.pzwiki.net : A wiki for the indie game Project Zomboid.

Q

 * Qi Hardware - qi-hardware.com : Copyleft hardware project.
 * - Qualitionary - Qualitionnaire : The purpose of Qualitionary is to create an English language glossary of terms used in the implementation of Integrated Management Systems covering:
 * the environment
 * the quality of the products and services
 * the health and safety of all stakeholders.
 * The project is not intended to duplicate existing dictionaries or to compete with any existing online reference, such as Wikipedia, but rather to augment them with definitions derived from laws, directives, regulations, and standards. Qualitionary is its French language counterpart


 * Quadratus.ws - Quadratus.ws :Personal site.
 * QuakeWarsWiki.net - QuakeWarsWiki : Enemy Territory: Quake Wars community wiki.
 * Quantiki - Quantiki.org: Quantiki is the free-content WWW resource in quantum information science.
 * Quickbooks Download - Quickbooks Download :A website that focuses on providing the community with Quickbooks tips, tricks, and downloads.
 * Quicken Download - Quicken Download :Resources, reviews, and guides on the latest version of Quicken.
 * QuSim - The UQ QuSim: The Quantum Simulation Group at The University of Queensland directed by Prof. G. Vidal
 * Qwiki - Qwiki.stanford.edu: Qwiki is a quantum physics wiki devoted to the collective creation of technical content for practicing scientists.

R

 * RacecarID - racecarid.com :A repository for Racecar and related information.
 * Radiology Wiki - RadiologyWiki.org :A reference for medical imaging
 * Radswiki - radswiki.net :A radiology wiki
 * RangersPedia - rangerspedia.org :Comprehensive guide on the net to the World's most successful club, Rangers FC
 * RationalWiki - rationalwiki.org
 * RaveWiki - ravewiki.com :A site hosting software projects (like the Rave Framework), documentations and articles
 * Razor Wiki- wiki.razorirc.info :A site for development and documentation for an IRC client, server and in-house protocol.
 * Raw Natural Health Wiki - RawNaturalHealth.com : Use simple, raw, natural, healthy, organic foods that work to get you into better health and well-being.
 * 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.
 * Real Estate- http://www.florida-propertysearch.com:Tampa Bay beaches real estate and gulf beaches
 * Reforpedia - Reforpedia :The Bible (in Greek and Hebrew), Doctrine and History from a Reformed (Calvinist), Christian perspective, emphasis on linguistics
 * ResearchID.org - ResearchID.org :Researching all issues related to intelligent design.


 * RizonWiki - Rizon Wiki :Rizon Network's Knowledge based Wiki for FAQ and Information relating to the network.
 * RLDSWiki - Wikia :A Restoration Branches knowledge base, written from a RLDS Point of View.
 * Roblox Wiki - wiki.roblox.com :Teaches you how to Use, Play and Build on a free online Multiplayer game called Roblox.
 * Rocna Anchors Knowledge Base - www.rocna.com/kb :Comprehensive collection of resources relating to boat anchors, anchoring, and accessories.
 * RODER Vision - RODER Vision :A guide on LED lighters for industrial vision systems.
 * Rodovid - rodovid.org : The généalogical three wiki.
 * Royalist Canada - Royalist Canada :Central information and educational resource for Canadian monarchists and those interested in learning about the constitutional monarchy of Canada.
 * RTAW Reefpedia - RTAW Reefpedia :Reefing the Australian Way Reefpedia, providing and information resource on the keeping of a marine aquarium for Australian hobbyists.
 * RuneScape Wiki - RuneScape Wiki :A large database containing information on the game RuneScape, hosted by Wikia.
 * RxWiki - RxWiki.com : An online medication encyclopedia for consumers, written and edited by pharmacists.

S

 * S1mp3 project - wiki.s1mp3.org :Information related to the S1 Mp3 Player
 * SalviaDivinorum.org - Salviadivinorum.org :Covering Salvia Plant Research and Usage and media coverage
 * SacWiki - SacWiki.com :The definitive guide to all things related to Sacramento California.
 * 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 whit your friends! (posted by Edugta.)
 * sasCommunity.org - sasCommunity.org :The place for all users of SAS software to gather to share information.
 * Saltspring Ecovillage Education & Development Society (SEEDS) - IslandSeeds.org :Development of an ecovillage on Salt Spring Island, BC, Canada
 * Santa Cruz.com - Santa Cruz.com :Santa Cruz, California news, events, and tourism information
 * Scan New England - Scan New England : Covering the radio communications hobby for the New England area of the USA.
 * SCI Team Wiki- www.sciteam.ubc.ca :A peer program group from the University of British Columbia
 * Scion Tech- www.scion-tech.org :A site for the Toyota Scion line of cars: tC, xA, xB, xD.
 * ScottishClimbs- www.scottishclimbs.com :A site about climbing in Scotland.
 * Scout It Out - scoutitout.org :A wiki designed to provide information on great Boy Scout activities that are available for Boy Scouts in their area.
 * ScoutWiki - en.scoutwiki.org :Free scouting encyclopedia in English.
 * Scramble - scramble.nl :All about aviation.
 * Scratch Wiki - wiki.scratch.mit.edu :A Wiki about the programming language Scratch.
 * ScriptsPedia - www.scriptspedia.org :A Wiki dedicated to open source code examples in various programming languages.
 * SDIY wiki - www.sdiy.info :A wiki for learning about DIY electronic musical instruments and related equipment.
 * Seattle Wiki - seattlewiki.org :The city of Seattle and surrounding area
 * Second Life - wiki.secondlife.com :Official Second Life's Wiki
 * Second Life History Wiki - history.secondserver.net :Historical record for the 3D, online, chat-build, multi-user environment Second Life.
 * Sega Retro - http://segaretro.org :Encyclopedia of Sega-related media.
 * Seizam - www.seizam.com :Freedom to the Artists! Seizam is a creative and collaborative tool for art based on MediaWiki's philosophy and technology.
 * Selfhelpwiki - Selfhelpwiki.org :Self help Wiki .org is the premier self-help site concerning all self-help issues. It is a collaborative project from many ordinary people that know about self-help.
 * SEO Wiki - www.seo4india.co.in :For all SEO professionals, webmasters, Users and website owners.
 * ServerWiki - www.serverwiki.org :For Game Server Administrators, covers setup and installation of all different kinds of Game Servers on various Operating Systems.
 * SFWiki - http://sfwiki.org :Information for locals and travelers to the SF Bay area.
 * Shadowlack Codex - shadowlack.com/wiki :An original science fiction and fantasy world building (conworld) project.
 * Shadowrun : Awakened Wiki - awakenedmmo.org :Open-Source Shadowrun MMORPG
 * Shartak Wiki - http://www.shartak.com :Web-based MMPORPG, set on a mysterious island where natives and outsiders hunt and explore.
 * ShetlandDictionary.com - ShetlandDictionary.com :The Online Shetland Dictionary. Over 700 Shetland words that can be searched by Shetland to English or English to Shetland
 * Shetlopedia.com - Shetlopedia.com :The Shetland Encyclopedia. For all things Shetland related.
 * Shipwreckwiki.info - Shipwreck Wiki.info :Shipwrecks all around the world. Maps, divers opinion, books, etc.
 * Showiki - Showiki.com :Hollywood information for the current day artists.
 * ShropshireWiki - ShropshireWiki.com :A collaborative site dedicated to the county of Shropshire, England.
 * SICSR Wiki - SICSR Wiki :Wiki of Symbiosis Institute of Computer Studies and Research, Pune, India, having various technical and non technical articles contributed by the students themselves.
 * Sightseeing Wiki - www.sightseeingwiki.org :The greatest Places of Interest around the World.
 * Sikhi Wiki - sikhiwiki.org :Encyclomedia of the Sikhs
 * SilkRoad Online Wiki (invalid link) - silkroad.skenmy.com :Online MMORPG SilkRoad Online
 * Silverlight 3D wiki - sl3d.woodassoc.us :Silverlight 3D library wiki with description of all library namespace, class, functions, etc. and their uses.
 * Simulism - simulism.org :Wiki about Simulism
 * SiteRewriter Wiki - siterewriter.com :Site Help for all web sites
 * SkepticWiki - www.skepticwiki.org :Site the Encyclopedia of Science and Critical Thinking
 * 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.
 * Skyshard Heroes Wiki - skyshardwiki :Wiki for the flash based MMO - Skyshard Heroes.
 * Slabscapedia - Slabscape.com :The future's out there.
 * Sleepedia - Sleepedia.org :Information about sleep, sleeping problems and sleeping aids.
 * Slowtwiki - http://www.slowtwitch.com/wiki :Wiki dedicated to endurance sports.
 * SmallBusiness.com - http://smallbusiness.com :Wiki resource for owners and managers of small businesses.
 * Smart OneHealth -Smart OneHealth :Wiki Source about Science behind Sleep and Rest
 * SmartLogic Solutions - smartlogicsolutions.com :SmartLogic Solutions is a software development and consulting firm. SLS specializes in creating data-driven web applications.
 * SME Server - http://wiki.contribs.org/Main_Page :Official wiki for the SME Server.
 * 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 - wiki.awakenedvoice.com :Documenting the world of social media.
 * 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.
 * SolidsWiki - solidswiki.com :Equipment for Handling and Processing Bulk Solids.
 * Sonic Retro - http://info.sonicretro.org/ :Encyclopedia of Sonic The Hedgehog-related media.
 * SonikWiki - sonikmatter.com/wiki :Living documentation for the Sonikmatter Communities, including Kurzweil Synthesizers and Logic Audio.
 * Sonic-Planet - http://sonic-planet.ru/ :Russian Sonic-related encyclopedia.
 * Sons of the Thames - www.sonsrowing.org.uk :Sons of the Thames Rowing Club, Hammersmith.
 * Source Watch - sourcewatch.org :Directory of the people, organizations and issues shaping the public agenda. Focus on propaganda (formerly "Disinfopedia")
 * South Dublin Astronomical Society - southdublinastronomy.org :Amateur observational astronomy resource
 * Southeast Asia - Southeast-asia.jbdirectory.com :Encyclopedia of Southeast Asia
 * SpamWiki - spamtrackers.eu :This wiki, maintained by spamtracker.eu contributors, is devoted to understanding spam and how you can personally take action to create a spam-free world.
 * Spadout - Rock Climbing Gear :Spadout provides information about gear and techniques used in outdoor sports including rock climbing, backpacking and caving.
 * SpankWiki - SpankWiki :SpankWiki is a community driven porn/tube site based on MediaWiki.
 * SpartniaWiki! - SpartniaWiki :Was "wikiblue" :A wiki for an IRC channel
 * Spiderweb Roleplay Wiki - rpwiki.calref.co.cc :info on various online role plays.
 * Splunk product documentation - splunk.com/base/Documentation :Splunk's documentation team uses a super-customized MediaWki product documentation site with support for versioning and navigation. These customizations will be available as open source extensions soon, look for project PonyDocs!
 * SpongePedia - Home - SpongePedia :An extremely popular SpongeBob wiki with over 700 full Quality artices, with lots of fun. be sure to join! also in german
 * SpongyWiki - SpongyWiki.com :It's a wikipedia for SpongeBob - but a lot crazier. We have events, games, prizes, and much more coming soon. Please join and become part of the revolution!
 * SporeWiki - sporewiki.com :SporeWiki is the knowledge base dedicated to Spore - the computer simulation video game developed by Wright Will Wright
 * Sportiki - sportiki.com :A live, user-created site covering the world of sports.
 * SpottersWiki - SpottersWiki.com :Guide to airport spotting and photography locations
 * Square Mile Wiki - inthesquaremile.com :Information about the City of London
 * SDSC SRB Wiki - sdsc.edu/srb :Information about the San Diego Supercomputer Center's Storage Resource Broker (data grid software)
 * Stadtwiki Karlsruhe - ka.stadtwiki.net :city wiki for Karlsruhe, Germany
 * Stargate Wiki - stargate-wiki.org :Canon-only Stargate Wiki
 * Star Trek Online Wiki - STOWiki.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.
 * Stunts Wiki - stunts.hu/wiki :Information, resources, history and whatever else related to the classic racing game Stunts (aka 4D Driving).
 * Sublime Portal, The - | sublimeportal.com :Expats forum and information about Turkey.
 * Substepr - Substepr.com :One of the first serious attempts at an open research website: Higher quality standards than WikiHow or eHow.
 * Suicide prevention - suicide-prevention.dummipedia.com :A source of information and resources for suicide prevention.
 * Sunnyday - sunnyday.su :Psychology, training, and self-improvement. (Russian)
 * Sunshine Review - SunshineReview.org :An encyclopedia dedicated to open government through the sunshine of transparency.
 * SUWiki - suwiki.org :The Sketchup Wiki.
 * Sweetnam.eu - sweetnam.eu :Personal website of a I.T. Technical nature.
 * en.Swpat.org - en.swpat.org :The software patents wiki
 * SymbianWiki - SymbianWiki.com :An editable guide telling you All About Symbian.
 * SynSIG - synsig.org :promote the study of Speech Synthesis in general.

T

 * Table Tennis Philippines - tatapx.org :Table Tennis Association of the Philipines Extension
 * Tamil Eelam Online - Tamil Eelam Online :Tamil Eelam Online is a news and online service that focuses on providing reliable and accurate information in Sri Lanka.
 * Talk Nightlife Wiki - wiki.talknightlife.com : The memory bank for the Talk Nightlife forum.
 * 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.
 * Teaching resource Wiki - www.teachersresourcebank.com : Teaching resources for Key Stage 1 & 2
 * Technical Analysis - Technical-Analysis.EU : Encyclopedia for Technical Analysis (Financial).
 * Team FREDNET - Open Source Development Wiki : Google Lunar X-Prize Open Space Competition team.
 * Technical Christmas - www.TechnicalChristmas.com : Technical Advanced Christmas Decorating
 * Technical Presentations - TechPresentations.org :Collection of conferences and presentations on various technical topics
 * Techotopia - Techotopia.org :A library of free on-line IT books
 * TechWikiToday - TechTalkToday.co.nr :A technology article database for the TechTalkToday forums.
 * 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.
 * Teleradiology - Teleradiology : All news and discussion relating to the transmission of digitized medical images.
 * TelemarkWiki - Telemark Wiki : Telemark Skiing.
 * TeleWiki - www.BusinessPhonesDirect.com/wiki/ :Articles on business telecommunications including hardware, programming, compatibility, installation, companies.
 * Terra Nova Wiki - terranovawiki.org : Biggest and best reference wiki for Terra Nova.
 * Terraria Wiki - wiki.terrariaonline.com/ : The official Wiki for Terraria.
 * TESLibrary - www.teslibrary.com : A wiki site dedicated to all things Elder Scrolls, the Bethesda Softworks series of games (Arena, Daggerfall, Battlespire, Redguard, Morrowind, Bloodmoon, Tribunal, Oblivion, Knights of the Nine, Shivering Isles, etc.)
 * Test Wiki - testwiki.unixpod.com : A wiki for the testing of sysop, bureaucrat, oversight, and checkuser (limited) rights. Runs off the trunk version of mediawiki (updated daily).
 * TFWiki - TFWiki.net : Knowledge database dedicated to the various Transformers characters, episodes, comics, and toylines.
 * Transformers Universe Wiki - transformersuniversewiki.net : Wiki about the online game.
 * The ABC DollWiki - The ABC DollWiki : A wiki on things related to dolls focusing on fashion dolls such as Barbie® dolls and Fashion Royalty®.
 * The Aquarium Wiki - The Aquarium Wiki : The encyclopedia of all things aquatic.
 * The Berries - The Berries :The Berries
 * The Chemistry Book - The Chemistry Book: An online chemistry textbook.
 * The Dead Linger Official Wiki - The Dead Linger Official Wiki : The official wiki of The Dead Linger, an open world zombie survival game by Sandswept Studios.
 * The Five Pillars Wiki- The Five Pillars Wiki : A wiki about the online multiplayer game The Five Pillars.
 * The Funny Wiki - The Funny Wiki : A wiki that you can put anything you want on, a kid work and school safe uncyclopedia.
 * The Ginever Block - TGBwiki : The TGBwiki is the development wiki for Pokémon Crimson.
 * The Halo Wiki - The Halo Wiki: a wiki dedicated to the Halo Trilogy..
 * The Hidden Wiki - Only on Tor.
 * The Infosphere - theinfosphere.org :A wiki for all Futurama related info.
 * The IT Community - www.theitcommunity.com :The wiki knowledge base from IT guys, for IT guys.
 * The Kim Stanley Robinson Encyclopedia - The Kim Stanley Robinson Encyclopedia :A New project documenting the works of author Kim Stanley Robinson.
 * The Mana World - The Mana World Wiki : TMW is a 2D MMORPG. Wiki document gaming and development aspects.
 * 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 Programmers Wiki - theprogrammerswiki.org :Any general topic concerning computer programming.
 * The Real Fiction - www.therealfiction.net :A wiki about a World of Warcraft Game Community "TRF 3.3.3a" WOW
 * The Wiki Fire - The Wiki Fire : The unofficial, free encyclopedia of Knox College in Galesburg, IL
 * Theatre Support Systems Wiki - TheatereSupportSystems : A web site devoted to providing technical support documentation for Center Stage Softwares Wintix and Tixsale Box-office Ticketing system.
 * 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
 * ThetisWiki - ThetisWiki : A parody planet with humurous articles
 * The Trail Wiki - TheTrailWiki.org :A Compilation of Maps and Experience documenting a multitude of Trails and Backpacking routes around the world.
 * The Fish Wiki - The-Fish-Wiki.com :The wiki of all thing aquatic form reefs to cold water you name it we have got it.
 * The Ultimate Comment - TheUltimateComment.com :Postmodern investigation of the Secret of the Universe
 * Thinkerpedia - thinkerpedia.net :The critical thinking wiki
 * ThinkNOLA Wiki thinknola.com :Wiki guide to life in New Orleans, post-Katrina
 * ThinkWiki - thinkwiki.org :Linux distributions on IBM/Lenovo ThinkPads
 * This Might Be A Wiki - tmbw.net :Wiki for all things They Might Be Giants
 * Thistlepedia - wiki.thethistle.org :Thistle yearbook's wiki
 * Till Kraemer Encyclopedia en.till-kraemer.com/wiki : Encyclopedia without notability guidelines
 * TinyMCE step by step - rorlach.de :Documentation and examples for the TinyMCE webeditor
 * TipCollection - tipcollection.com :Tips, tutorials and how-to guides to help make life easier.
 * Tolkien Gateway - tolkiengateway.net :Currently the largest encyclopedia about J.R.R. Tolkien and his works.
 * Toronto Wiki - wikito.org :Toronto Restaurants, Cafes, Bars, Clubs, Attractions, Real Estate, Shopping, City Life and more
 * Total Commander Wiki - www.ghisler.ch/wiki :Knowledge base for Total Commander, famous file manager software for Windows
 * Total Malware Info - totalmalwareinfo.com :Malware descriptions: viruses, trojans, worms, backdoors, and spam; removal instructions; papers on computer security; provided by Design and Test Lab
 * Tracklists.org - tracklists.org :User contributed DJ Set Tracklistings
 * Track2Asia - www.track2asia.com :Travel guide for Asia allowing travelers to share their experiences, upload photos, and provide other travelers with insight information about destinations in Asia.
 * 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.
 * Translatewiki.net translatewiki.net :Free Open Source Software localisation wiki-style
 * Transpedia [Transpedia.ca] :Free Encyclopedia of Gender Expression and Presentation
 * Travel and Tours Guide - www.travelandtoursguide.com :Imagine planning your next trip based on the sum of all knowledge from millions of travellers and tourists around the world. - That's our vision.
 * Tremulous - tremulous.net/wiki: Documentation wiki for the open source game Tremulous
 * Trunkmonkey Racing - www.trunkmonkeyracing.com/wiki:Trunkmonkey Racing's race team operations and logistics guide
 * TSR Wiki - thestudentroom.co.uk :The Student Room, Information for students
 * Tubeopedia - Tubeopedia.com :Everything you ever wanted to know about vacuum tubes, the equipment and circuits that use them and theory about them.
 * Tulipedia - tulipedia.org :Encyclopedia on Calvinism
 * TurboTax Free - TurboTax Free :TurboTax resources to help the community save time and money.
 * The TV IV - tviv.org :An online compendium of television knowledge
 * The Star Wars Podcasting Guide - TSWPG :A wiki to help podcasters or prospective podcasters.
 * Thilopedia - www.thesecondbestfanpageintheuniverse.com :A wiki made by fans of Thilo Savage, who was deleted from wikipedia due to a grave miscalculation.
 * Things You Should Know About - Tyska.net :Tyska is collaborative writing project focused on providing our readers only the most important and actionable information on any given topic.
 * T-Vox - t-vox.org :Information, advice and support group from transgendered, intersexed and genderqueer people.
 * TelenovelaWiki - telenovelawiki.com :Read full information on thousands of Telenovelas.

U

 * UBC Wiki - UBC Wiki : The University of British Columbia Wiki
 * UgandaWiki - ugandawiki.ug :The Uganda online encyclopedia.
 * UK Online Takeaway - ukonlinetakeaway.com : UK site for online takeaways
 * ukcider - ukcider.co.uk/wiki :Real cider and perry
 * UK Citizens' Online Democracy - www.ukcod.org.uk : Website for the charity UK Citizens Online Democracy.
 * 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
 * UMassWiki - umasswiki.com :Wiki for the University of Massachusetts Amherst community
 * Uncyclopedia - en.uncyclopedia.co :Satirical parody of Wikipedia, see Uncyclopedia.
 * Unified Republic of Stars - unifiedrepublicofstars.com/wiki :A collaborative story telling project based around a new and unique science-fiction world.
 * United Federation of Trek Encyclopedia - fedtrek.com/wiki :A sci-fi/fantasy wiki
 * United Nations Development Programme (UNDP) - WaterWiki: On-line knowledge map and collaboration tool for the UNDP-Water-Community of Practitioners in Europe & CIS
 * Unofficial Elder Scrolls Pages (UESP) - uesp.net :The wiki about the Elder Scrolls series of games.
 * Unofficial TransGaming Wiki - cedegawiki.sweetleafstudios.com : A collection of information about using Cedega, which allows many Windows games to be played on Linux. Consists mainly of a database of games that have been tested on Cedega.
 * Unmaintained Free Software - unmaintained-free-software.org :Unmaintained/orphaned Free Software projects which are in need of a new maintainer
 * UOGuide - UOGuide.com :An encyclopedia on the MMORPG Ultima Online
 * Ubuntu Document Storage Facility -UDSF :A documentation Wiki for Ubuntu Linux
 * Urban Dead Wiki - http://www.urbandead.com : A Massively Multi-Player Web-Based Zombie Apocalypse. MMPORPG.
 * USEC Force wiki - http://codethirteen.com/usec/ : A knowledgebase for the Worlds leading Virtual Military
 * USEC Force wiki mirror- USECFORCE : A knowledgebase for the Worlds leading Virtual Military
 * Utah Dogs Wiki - http://www.utahdogs.com/wiki/ :Information for Dogs and their people in Utah.
 * uCoz Wiki - http://www.uwiki.org.ua/ :Online Manual for uCoz - Free Hosted CMS.
 * uCtrl.net - http://uctrl.net :Wiki for electronics and microcontroller projects.

V

 * Valve Developer Community - developer.valvesoftware.com :Information about Valve's SDK and Tools
 * Vanipedia - Vanipedia: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.
 * VAPus vapus.net/wiki :OpenTibia related articles
 * Venture the Void Online Documentation - venturethevoid.com :Online documentation for space exploration MMORPG
 * Vicksburg Fire Department - vicksburgfd.com :A wiki for the use of and about the Vicksburg Fire Department in Vicksburg, MS.
 * Vicloronomicon - wiki.arcandio.com :A growing wiki of role-playing game material
 * Videoville - videoville.org :A wiki for cool music videos.
 * The Vim wiki - vim.wikia.com :A wiki dedicated to the cross-platform Vim editor
 * Vindemi - Vindemi.com :A wiki dedicated to Antiques and Vintage Items.
 * Vistahires - vistahires.com :Hiring site for Vistaprint
 * Visual KoL - thekolwiki.net :Information about the online role-playing game, Kingdom of Loathing.
 * The Voxel Box Wiki (VoxelWiki) - voxelwiki.com :The official wiki of The Voxel Box Minecraft community.
 * 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.
 * Unofficial Vyatta Wiki - vyattawiki.net :A wiki about Vyatta open source router

W

 * WC3Wiki: Warcraft III Azeroth Clan. Clan Owns Wiki page used to network between clans, plan and arrange tournaments, and to download maps and software.
 * Watch-Wiki :The free watch encyclopedia in several languages - is an on-line reference about watches.
 * WaterWiki.net: The knowledge and collaboration Wiki for Water Professionals working in the International Development (United Nations) context
 * Wayne State University's 1020 Wiki: Wiki for first year writing courses at Wayne State University
 * Wazaabi - wazaabi.org : Website of the Wazaabi toolkit, an accelerator for the development of rich client applications based upon Eclipse RCP, XUL and J2EE.
 * WebKit - opendarwin.org :Wiki for the WebKit project, used extensively in Safari and Mac OS X
 * Webmasterteachyourself - webmasterteachyourself.com : The Free Simplified Online Webmaster Guide
 * WebPlatform - docs.webplatform.org : Community-driven site that aims to become a comprehensive and authoritative source for web developer documentation.
 * WeCheck - wecheck.org : The People's Fact Check that anyone can edit
 * WeRelate - werelate.org : The world's largest genealogy wiki
 * Wesnoth - wesnoth.org :Website and wiki for the Battle for Wesnoth project, a free turn-based strategy game
 * Whackpedia - whackpedia.com :A content and discussion forum for vertical integration of worldwide discussions and more
 * WhatPort80 - whatport80.com:A work-safe catalog of Internet and popular culture, with articles contributed by readers.
 * What The Hack - whatthehack.org :The outdoor hacker conference/event in the Netherlands 2005
 * Where to See Wildlife - wheretosee.org/wildlife/Main_Page :A website dedicated to finding the best locations to see wildlife.
 * Who Bought Who - whoboughtwho.org :The definitive list of where companies went, who bought them swallowed them up or did they go bust!
 * Who Is Everyone? - whoiseveryone.com :A website which contains biographical articles about real people
 * WICWiki - www.wicwiki.org.uk :Christian website which contains over 25,000 articles, covering a variety of subjects.
 * WiFi Wiki AiRdump - AirDump.Cz Wiki: Wardriving, Wireless, WEP, Hardware Hacking Document System
 * '''Wikademia - Wikademia.org :a site for learning, research, and project collaboration
 * Wikevent - wikevent.org :worldwide, Free calendar of public events (like concerts, lectures, parties, classes, sporting events, ...)
 * Wiki24 - 24.wikia.com :Everything there is to know about the hit television series 24
 * WikiVidea - WikiVidea.org
 * WikiVS - wikivs.com
 * Wiki4Games - Wiki4Games.com : A wiki about video games.
 * Wiki69.org : The wiki with a dirty mind. Wiki69 is a repository of sex stories and articles.
 * Wikia - www.wikia.com :A network of MediaWiki sites on many topics
 * WikiAbout - WikiAbout.com : "Knowledge Base without a Tie" ... that anyone can edit. Share your Expertise with the World ... in a Casual Way.(Beta version - Help Wanted). Complementary to a
 * Wikiants - Wikiants.org :Wikiants is a encyclopedia for projects with free contents
 * WikiAudio - WikiAudio.org : User created Encyclopedia and database project for all things audio or sound related.
 * Wikiasiantravel - Wikiasiantravel.org :Your ultimate guide to travel to Asia, with sights to see, accommodation details, places to dine, shopping spree locations, news, Great Deals and more!
 * Wiki@NASS - http://ngeeannsec.site11.com/ :An educational Wiki specially made for Ngee Ann Secondary School students in Singapore for research and information.
 * WikiBlog Consulting - wikiblogconsulting.com :a free, collaborative resource for professionals
 * Wikibon - Wikibon.org :Best practices in storage, IT and business written by a community of practitioners, consultants and market researchers.
 * WikiCells - wikicells.com :A wiki all about cell phones!
 * WIKICHAT - www.wikichat.org : Developing chat-related extensions for the wiki community.
 * Wiki Classical Dictionary - www.ancientlibrary.com/wcd/ : A wiki devoted to the history, literature, mythology, art and archaeology of the ancient world.
 * Wikicompany - Wikicompany.org : A free, worldwide, business directory.
 * WikiCrimeLine - WikiCrimeLine.co.uk :Resource on English criminal law
 * WikiDance - WikiDance.org : A directory of dance related groups. Bands, teachers and Clubs.
 * Wikidesktop - wikidesktop.org :Desktop Engineer Guide for desktop engineers, technicians, administrators and deployment engineers. For software deployment and imaging on Microsoft Windows.
 * WikiDevices - wikidevices.org :Objective information on consumer electronics, hacks, tests, performance, usability.
 * WikiDrivers - Wikidrivers :Device drivers for video, sound, storage, networking and input devices, chipsets and CPUs.
 * WikiEd - WikiEd.co.uk :A Wiki for student and teachers alike to create SQA course notes.
 * wikiEODia - wikiEODia.co.uk : A Wiki for sharing information about online gaming, particularly vanguard, everquest and wow, but any information welcome!
 * WIKI-EUROPA - Tribune of European civil society :Knowledge base about European democracy, government, human rights, civil society, solidarity ( G / F / E)
 * Wiki Fact - www.WikiFact.net : Is it a fact or fiction?
 * WikiFamilyFun Family Fun Activity Guide : A family activity guide created and edited by families.
 * WikiFAQ - wikifaq.com :Informative FAQs on all imaginable topics
 * Wiki Farming - wikifarming.org :A Manual on Agriculture
 * Wikifashion- wikifashion.com :Where fashion lovers can catalogue clothes, designers, shows and all things fashion.
 * Wikifeeds - en.wikifeeds.com : A project that aims to create pages populated with relevant web feeds that are updated every hour. This project is similar to sites like popurls® and Alltop with the difference being that pages can be created and updated by anyone in the world.
 * WikiFilmSchool - wikifilmschool.com :A wiki designed to inform and instruct on all aspects of filmmaking and the processes involved with it - from high budget studio pictures to no-budget do it yourself guerilla filmmaking.
 * WikiFood - WikiFood :A wiki on food and recipes. A project by WikisORG.
 * WikiForGood - wikiforgood.org :Guide to social and environmental progress
 * Wikifund - wikifund.info :Wikifund is a forum for sharing good practice and ideas in fundraising and non-profit management.
 * WikifyIndia - WikifyIndia.com :Wiki of Indian Government Procedures
 * Wikigate - maximumtailgating.com/wiki :source of tailgating information for sports fans in the United States
 * wiki.GIS.com - wiki.GIS.com :Geographic Information System (GIS) - centric knowledge base.
 * WikiGlobalMart - WikiGlobalMart.org :Open and free global marketing place for any organization, product and service from any part of the world.
 * Wikigogy - wikigogy.org :to write TEFL TESL TESOL English teaching lesson materials and ideas
 * Wiki-Gore-Pedia (Wikipedia Goregrind) - www.goregrind.com/wiki : a complete encyclopedia of goregrind music
 * WikiGreen - WikiGreen.com :A Wiki for all things Golf that anyone can edit.
 * WikiHealth - wikihealth.com :Health & Wellness topics
 * WikiHelp - en.wikihelp.cc :A help documents site
 * wikiHow - wikihow.com :A How-To Manual
 * wikIran - wikIran.org :Open content English-language encyclopedia project of the Iranian-speaking peoples
 * WikiIslam - WikiIslam :Online resource with articles on various areas of Islam based on its own sources, the Qur'an, hadith and Islamic scholars.
 * WikiJava - WikiJava.net :The Wiki about Java, on WikiJava you can find all the code samples and tutorials about the most powerful programming language in the world.
 * WikiKnitting - wikiknitting.com :A knitting How-To and collection of free patterns
 * WikiKnowledge - wikiknowledge.net/wiki:The free information database that anyone can edit.
 * WikiLectures - www.wikilectures.eu: Online study materials for medical students.
 * WikiLemon - ld.fubaria.org/wiki :A Lemon Demon community wiki
 * Wikilevels - www.wikilevels.org/wiki : A free video game walkthrough wiki
 * Wikilivres - wikilivres.info : Multilingual wiki (now English, French, Russian...) auxiliary to the WMF Wikisource projects. Use the Lilypond extension for sheet music. Free documents. Hosted in Canada.
 * WikiLou - www.wikilou.com :A collaborative wiki about St. Louis, Missouri and the surrounding area.
 * WikiMama - www.wikimama.com/recipe :A wiki project aimed at collecting tested and comparable recipes with photos and videos.
 * Wikimantic - wikimantic.com :Celebs Romantic History
 * WikiMaple - WikiMaple :A wiki on MapleStory, the MMORPG 2D game. A project by WikisORG.
 * Wikimbad - wikimbad.org :A wiki for sharing reduced and published astronomical data.
 * WikiMedStudent - wikimedstudent.com :A wiki for students of Medicine and the Health Sciences
 * Wikimmigrant - Wikimmigrant.org : A free, worldwide project for aggregating information about immigration laws and rules.
 * WikiMusician - wikimusician.org :A musician's multimdia wiki for playing, recording and performing music. Learn from peers. Show and tell what you know.
 * 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.
 * WikiNotes - wikinotes.hosted.hostmax.co.uk :UK A-Level notes collaboration project
 * Wikiot - wikiot.com :Music wiki for guitar, piano, drums, etc. Includes lessons, projects, tabs, etc.
 * Wikiout - Wikiout:Free and up-to-date content developed by the LGBT (Lesbian, Gay, Bisexual and Transgender) community for the LGBT community.
 * WikiOutdoors - WikiOutdoors.com :A wiki devoted to helping people get outdoors. Includes articles, gear reviews and program reviews for activities like hiking, mountain biking and skiing.
 * Wikipages- wikipages.com :Business directory for NYC and other cities.
 * WikiPasy - en.wikipasy.pl :Encyclopedia about oldest polish football club - KS Cracovia.
 * WikiPathways - WikiPathways.org :Biological pathways curated by the scientific community.
 * Wikipoidia - wikipoidia.org :Knowledge base related to fire performance.
 * Wikiputer - Wikiputer :Wiki on Information Technology. A project by WikisORG.
 * WikiQueer - WikiQueer.org :Encyclopedia and resource hub project specifically for and by the lesbian, gay, bisexual, transgender, questioning, and allied communities.
 * WikiRadio - Wikiradio.org.uk :Amateur & CB Radio site for radio enthusiasts. Everything radio related.
 * Wikireedia - wikireedia.net :Academic and general interest site
 * Wikisimpsons - Simpsonswiki.net :The best Simpsons wiki on the internet.
 * WiKirby - WiKirby :It's a wiki. About Kirby. Stylish wiki documenting Nintendo's Kirby game franchise.
 * Wikireason - wikireason.net : A debating community that emphasizes the logical structure of arguments.
 * WikiRevs - wikirevs.com : A catalog of product and service reviews (help wanted).
 * WikiRun - wikirun.com :A running encyclopedia.
 * Wiki-Scene - wiki-scene.com :A collection of tutorials guides and information on video game console hacking and modification.
 * WikiScope - wikiscope.org : WikiScope is a freely available portal for microscopy, spectroscopy and bioimaging.
 * Wikiscuba - wikiscuba.com : Scuba diving encyclopedia and dive site list.
 * Wiki-site - wiki-site.com:Wiki-Site.com allows you to open and manage a free wiki site;WikiSki - wikiski.com : A global guide to Snow Sport & Snow Resorts.
 * Wikisocion - wikisocion.org : Encyclopedia of socionics
 * WikiSound - WikiSound : A Site for indexing music
 * WikiSpecs - WikiSpecs : A collection of product information and specifications
 * WikiStock - WikiStock : A reference for Stock Traders
 * WikiStory- WikiStory.com :WikiStory.com allows you to write a short story together with other authors or to write one alone but share it with and receive feedback from thousands of others. (You can write a short story, poem, novel, plot, character description, or any other form of writing.)
 * WikiSummary - WikiSummary : Summaries of Academic Books and Articles
 * Wikithesia - wikithesia.com :Anaesthesia reference site to provide a forum for up to date information in anaesthesia.
 * WikiTranslation - WikiTranslation.org : A Wiki service that provides free human translations.
 * WikiTree - WikiTree.com : Worldwide collaborative family tree.
 * WikiUncle - WikiUncle.com : A Wiki resource for comparisons of anything.
 * WikiUni - WikiUni.com.au :A Wiki resource for university students collating notes, lecturers and course information
 * WikiVerde - WikiGreen.com :A Wiki about sustainability and Green Living.
 * WikiVis - wikivis.org :Information Visualization Wiki site
 * WikiWebComic - wikiwebcomic.penguindeskjob.com :A community-produced webcomic.
 * WikiWheels - www.wikiwheels.org : Global directory of customized cars & bikes.
 * WikiWit - WikiWit.com :WikiWit is a portal dedicated to community edited fictional stories, movie scripts, and any other open source collaborative, creative writing content.
 * WikiWrestling - wikiwrestling.com :WikiWrestling is your definative source of wrestling information.
 * Wikiwrimo - wikiwrimo.org :A wiki for everything related to National Novel Writing Month, Script Frenzy, and the Office of Letters and Light.
 * Wikiyobica - byob.hurfdurf.com :A Wiki for the board BYOB on the forums for SomethingAwful.com
 * WikiYoga - wikiyoga.org :Wikiyoga is dedicated to all forms of yoga
 * Wild-Mountain Wiki - wiki.wild-mountain.net :Share your mountain excursion routes
 * WinMerge Wiki - wiki.winmerge.org :A wiki for WinMerge development
 * Wiredtape - www.wiredtape.com :A wiki designed to help people with red tape and bureaucracy.
 * 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.
 * The Wonderful Wiki of Eamon - eamononline.com/wiki: Public wiki for the classic Eamon text adventure series and other related games.
 * Wookieepedia - starwars.wikia.com:Wiki about Star Wars run by Wikia
 * WordPress Codex - codex.wordpress.org :Online Manual for WordPress
 * World Of Sports Wiki - World Of Sports Wiki :The wiki for World Of Sports ( http://worldofsports.smfforfree3.com/ ).
 * World of Starie - Starie.org :An index of the fictional universe related to the cartoon character Starie.
 * World Wide Wiki - bmearns.net:8080 :Personal wiki with wide range of articles; electronics, computers, physics, math, religion, society, art, and music. Many articles are "how-to"s and similar information pieces.
 * World Wind Wiki - worldwindcentral.com :Knowledge base about NASA's World Wind
 * WowAce - www.WowAce.com:A community built around a add-on development framework for the World of Warcraft, by Blizzard Entertainment.
 * Wowpedia - Wowpedia.org :The game World of Warcraft, by Blizzard Entertainment.
 * WPIwiki - wiki.wpiirc.net :Unofficial Wiki of Worcester Polytechnic Institute
 * World of Sharks - http://www.worldofsharks.net : This portal explains every minute information on sharks.
 * WriteAdd - www.WriteAdd.com : Collaborative Narrative Writing Community.
 * WW II Dodge Wiki - ww2dodge.com :Wiki about Dodge military trucks used in World War II
 * WikiCancel - WikiCancel.org : Wiki with guides on how to cancel contracts and subscriptions with major companies.
 * Worldexpat online Worldexpatonline: Club wiki for creating basic Wikimedia extensions in PHP.
 * WikiSubculture - WikiSubculture.org : Wiki for global subcultures.

X

 * Xbox Media Center Online Manual - wiki.xbmc.org :The online manual for Xbox Media Center, the free open source (GPL) multimedia-player for the Xbox™ from Microsoft.
 * 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.
 * XC CoasterWiki - wiki.xtremecoastin.com :The largest resource of Roller Coaster and Amusement Industry information.
 * 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).
 * Xooguru - xooguru.com :Articles, reviews, advice and resources on shopping.

Y

 * Yellpedia - Yellpedia : The first complete United States Yellow Pages that's also a wiki. Over ten million listings (pages) waiting to edited.
 * YoMo - www.wiki.ufz.de :Young Modellers in Ecology. Scientific network, knowledge exchange.
 * YourSexWiki - Yoursexwiki : Illustrated Wiki Project about all aspects of sexuality
 * Youth Rights Network - youthrights.net :A discussion of youth rights, led by the National Youth Rights Association.
 * Yo-Yo Wiki - yoyowiki.org :Information about the toys called Yo-yo
 * YoYo Games Game Maker Wiki — yoyogames.com :Сreation of games with Game Maker

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.
 * Zestsellers - zestsellers.com :A website dedicated to bestselling books and movies.

MediaWiki-ready hosts
Some hosts in alphabetical order:
 * MediaWiki Optimized Web Hosting Providers. Comparisons.
 * 1&1 Internet
 * BlueHost
 * FusionHost
 * Host Color
 * Hostingplex
 * HostMonster
 * Hurricane Electric
 * IXWebHosting
 * LoopByte
 * Midphase
 * MyWikis
 * MilesWeb★
 * Omnis Hosting
 * Vistapages
 * Wikihosting.nl
 * Honey MP3 Music

... or any other host using PHP/MySQL