Sites using MediaWiki

Template:SitesUsingMediaWikiMultiLingual

This is a list of projects that are using Wikipedia:MediaWiki, the wiki engine running Wikipedia and other Wikimedia projects.

Wikimedia projects

Wikipedia (on all the different language sites), http://www.wikipedia.org
Wiktionary, a wiki based dictionary, http://www.wiktionary.org
Meta, a wiki for discussing all Wikimedia-related issues, http://meta.wikipedia.org
Wikiquote, a wiki for quotations, http://quote.wikipedia.org
Wikibooks, a wiki primarily for educational textbooks, http://www.wikibooks.org
The September 11 Memorial Wiki, http://sep11.wikipedia.org
Test Wikipedia, used for experimenting with the latest unstable features, http://test.wikipedia.org
Wikisophia, a WikiTeX prototype; http://wikisophia.org
Wikisource, a wiki for source texts, http://sources.wikipedia.org
Wikimedia Commons, a repository of free images and other files, http://commons.wikimedia.org/
Wikispecies, a species directory, http://www.wikispecies.org

Wikimedia project forks

Wikinfo (formerly Internet-Encyclopedia), Fred Bauder's fork of Wikipedia, aims to offer articles from multiple points of view as opposed to Wikipedia's neutral point of view: http://www.internet-encyclopedia.org . Wikinfo uses w:GetWiki- a fork of MediaWiki software.
Enciclopedia Libre, http://enciclopedia.us.es/ : an independent encyclopedia project founded by former participants of the Spanish Wikipedia.
Wikiznanie, http://www.wikiznanie.ru/ : Russian-language general knowledgebase (encyclopedia), uses BSD DPL.

Public wikis

40tudeDialogWiki (www.40tude.com/dialog/wiki)

a wiki about the Dialog newsreader

Acadine Archive (www.acadine.org)

A wiki devoted to covering the mysterious, occult, paranormal, and unknown without totally debunking or supporting each topic at hand.

Acadine's Spanish Archive (http://spanish.acadine.org)

a one stop resource for English speakers learning Spanish. Also translates books, such as the Wizard of Oz into Spanish.

Adapedia (www.adapedia.org)

Computer Science and Mathematics Knowledge Base. A project of the Wikinerds Community.

Ajax & XAB (Ajax and XAB Wiki)

A wiki to talk about AJAX web development

AlgoLibre (algolibre.wikinerds.org)

A project of the Wikinerds Community for the creation of a knowledge base on Free/Libre Open-Source Software.

Anarchopedia (www.anarchopedia.org)

Anarchist GFDL corpus access provider.

Andria w:Andria (www.freearchive.org/wiki)

a free long-term archive project for free digital content

Aniki w:Aniki (www.aniki.info)

a German wiki about w:Anime and w:Manga

Apuntes (www.wikiapuntes.org)

a Spanish wiki comunity to make and share notes of class.

Arija wiki w:Arija wiki

an encyclopedia about the town of Arija (Burgos, Spain), with a Photographic File about Cristalería Española glass factory - 1906 (Saint Gobain Glass Group), and the Dam of the Ebro river

www.arija.org/es/ Spanish version (best)
www.arija.org/en/ English version
www.arija.org/fr/ French version

Armeniapedia www.armeniapedia.org: All things related to Armenia and Armenians.
ASFR Info www.asfr.info: All things related to the alt.sex.fetish.robots newsgroup, and its members.
Asian Open Source Centre w:Asian Open Source Centre (www.asiaosc.org/enwiki/): aims to be an information and collaboration hub for w:open source software in w:Asia: http://www.asiaosc.org/enwiki/
AspieNetWiki (http://aspie.mela.de/Wiki/): (mostly) german Wiki from people with Asperger Syndrome for people with Asperger Syndrome... and anybody else.
AstroWiki (www.astrowiki.org): Amateur astronomy and telescope making.
BahrainWiki: everything Bahraini! And online free encyclopedia of and relating to Bahrain, its people, culture and history.
[Baseverde.it]: An online political participation portal.
Battlestar Wiki (http://battlestarwiki.joebeaudoin.net/): a wiki and Lurker's style episode guide for Battlestar Galactica
BCZ Encyclopedia ( http://encyclopedia.bcz.com/ ): An online encyclopedia, Wikipedia Fork.
BeirdoMythFAQ (mythtv.beirdo.ca/wiki/): a FAQ wiki for the #mythtv-users IRC channel on irc.freenode.net
Bible Wiki (wikibible.info): an open Bible commentary
Blitzed Wiki (wiki.blitzed.org): a place for all Blitzed users to express their ideas and collaboratively develop them
Blogalization Nation w:Blogalization Nation (www.blogalization.nu/nation/): a collaborative translation project and multilingual publishing forum
BonsaiWiki ( http://bonsaiwiki.tomk32.de/ ): German language wiki about bonsai trees, by Wikipedian TomK32:
Book of Wonders ([1]): an encyclopaedia of science fiction and fantasy ideas
BrasilienWiki ( http://rio.ifi.unizh.ch/brasilienwiki/index.php/Hauptseite ): German language wiki about everything concerning Brazil.
breakset ( http://breakset.com/ ): Sustainable Technologist Jason Michael Smithson's research · reviews · technology · training · projects and consulting
brkst ( http://brkst.com/ ): breakset resources and knowledge for sustainable thought
Bulbapedia ( [2] ): English language wiki about Pokémon.
Bunk's Imagery Wiki (andysocial.com/wiki): is a source for amateur imagery and GIS enthusiasts.
BuzzWiki ([3]): A public wiki for the free Buzz music tracker.
C-Arbre w:C-Arbre wiki (c-arbre.net/mwiki): companion wiki for a w:content management system that reuses code from MediaWiki for compatibility
Care2x (docs.care2x.org): documentation base for an open-sourced integrated healthcare information system project
Certifição PHP (www.certificacaophp.com.br/wiki/): A Zend PHP Certification guide in Brazilian Portuguese
ChangeKatesLife (www.changekateslife.com): A social encylopedia of users' lives
ChennaiLUG (www.chennailug.org/wiki): Chennai Linux Users Group
CleanJocks, (www.cleanjocks.com/): a collaborative project to build a reference site for information on performance enhancing drugs in sports.
Cloud Forest Institute, ([4]): An institute for the study of sustainability featuring the practical work being done in Ecuador and Northern California. In English and some Spanish.
Cnic.org(网络天书): Chinese Network Information Cyclopedia.
Compass ([5]): An encyclopedia of the Christian faith.
Computer Harpoon Computer Harpoon documentation: Site is used to collect, organize, and update all manuals and FAQ's for the Computer Harpoon products as collected over 15 years
Consumerium w:Consumerium is a project: developed under GFDL licence, to develop w:free software and information infrastructure for storage, transport and display of product information to consumers and w:feedback to the producers to enhance the consumer experience, advance product development and to keep this planet as hospitable as possible in the future: http://www.consumerium.org/wiki/wiki.phtml
contextgarden (contextgarden.net): a wiki about ConTeXt, a TeX macro package (computer typesetting)
Contraintes.net (www.contraintes.net): est un site francophone dédié au contraintes artistiques volontaires : littérature, cinéma, BD… Contraintes.netis a site dedicate to volontary artistic constraints: literature, cinema, comics... (French).
CorpKnowPedia w:CorpKnowPedia: dedicated to charting the corporate landscape
Crazy Hacks (www.crazy-hacks.org/wiki/): A database of crazy software- and hardware-projects of geeks all around the world.
Creative Commons wiki (wiki.creativecommons.org): a w:Creative Commons wiki
Creatures Wiki (creatures.wikicities.com): A wiki dedicated to Creatures and the first wikicities "Featured Wiki" ever, this wiki has a large amount of contributors.
Crewscut.com (www.crewscut.com): Webportal (in danish) for cultural players, dedicated to presenting cultural and media projects, networks and knowhow
CSDN&DonewsWiki (wiki.csdn.net/wiki/首页): A Chinese public wiki for IT encyclopedia and technical articles.
CTM Wiki (www.codepoetics.com): A wiki for people interested in the book Concepts, Techniques, and Models of Computer Programming, by Peter van Roy and Seif Haridi.
Cunnan w:Cunnan: dedicated to the collection of information relevant to people interested in w:medieval re-enactment, especially members of the w:Society for Creative Anachronism: http://cunnan.sca.org.au
DBWiki w:DBWiki: a German language wiki for database developers: http://www.dbwiki.de
Dead Pubs Society (www.dead-pubs-society.org.uk): a record of the closing of pubs in London and elsewhere in the UK.
Dead Cafe Society (www.dead-cafe-society.org.uk): a record of the change in society in the landscape of urban UK...
DelphiGL.com (wiki.delphigl.com): a German language wiki for OpenGL and 3D programming
demosoftware.net w:Demosoftware.net (www.demosoftware.net): demosoftware.net maintains free software demos and free support documentation for gpl'd software
Deutsche Python-FAQ (http://www.kubieziel.de/pythonwiki/): A German language wiki providing frequently asked questions and answers for Python
Disinfopedia en:Disinfopedia: an encyclopedia of propaganda. A project of w:PR Watch: http://www.disinfopedia.org/ , http://www.prwatch.org
dKosopedia, (www.dkosopedia.com/): a political encyclopedia built by the DailyKos community.
DOLEX, (dolex.akwa2day.de/): a german political wiki for members of the dol2day community.
DrFTPD wiki (drftpd.mog.se): w:DrFTPD, an w:FTP server written in Java
EAISM (www.eaism.com): Earth's Knowledge Encyclopedia (wiki fork).
EarthDweller.com (www.earthdweller.com): A Newspaper/Magazine to reveal what is important to any earth dweller.
Eartheism (www.eartheism.com): Eartheism - The Past, The Present and The Future. An Earth's doctrine as written by people of the earth. Come contribute your ideas on this Earth's religion/science.
EarthWiki (www.kayatana.com/wiki/): A project concentrating on Sustainable Development and the Environment. Also documenting the various projects in this field.
EditPlus Wiki (www.editplus.info/): Tips, tricks, and frequently asked questions about the text editor EditPlus.
EduxinWiki (wiki.eduxin.org): a site for Chinese-English bilingual learning
Encyclonigeria ([6] www.encyclonigeria.com]]): Pan-Nigerian Encyclopedia and knowledge-base.
EvoWiki w:EvoWiki (www.evowiki.org): Intended as a repository for mainstream scientific responses to common w:intelligent design and w:creationism arguments and information about w:evolution
FatalNetwork (www.fatalnetwork.com): a community-edited repository for reviews of movies, music and technology products.
FilmApart (filmapart.net): Public Domain media content creation and distribution under the Creative Commons Attribution-NonCommercial-ShareAlike copyright
FinestWebs Wiki (wiki.finestwebs.net/): About IT-Security : Music and Berlin. Just started in German.
FireSafety Wiki (wiki.testedgroup.com): Collaborative book about fire safety.
FIRSTwiki w:FIRSTwiki: information about the FIRST robotics competition: http://www.firstwiki.org/
Flexicon w:Flexicon: German language medical encyclopedia (software has been heavily modified): http://flexicon.doccheck.com/
FreeBSDWiki (freebsdwiki.org/): - a communal cheatsheet/notepad in support of w:FreeBSD
FreeCiv (www.freeciv.org/): a popular open source strategy game. The entire FreeCiv website runs on MediaWiki.
FreeCulture (blogspace.com/freeculture/Main_Page): a wiki version of the book w:Free Culture by w:Lawrence Lessig
FreeCulture.org (wiki.freeculture.org/): a site about w:Free Software, w:filesharing, and w:Open Content
Free Encyclopedia of Thelema (www.egnu.org/thelemapedia/): All about the philosophy of Will known as Thelema.
Freizeitparkweb w:Freizeitparkweb - A german Community about Amusement-: Themeparks and Fun Fairs http://wiki.freizeitparkweb.de
Game Contractor (gamecontractor.org): a forum for video game contractors and their clients.
Game Programming Wiki (gpwiki.org): The Game Programming Wiki is dedicated to providing easy-to-understand game programming knowledge to the public.
GamePedia.org (www.gamepedia.org): The first Free and Open Encyclopedia of Games.
GayPedia.org (www.gaypedia.org): The Free Guide to Gay Travel, Culture and Education.
Gentoo-wiki (gentoo-wiki.com): Created in order to give people a place to put HOWTOs, tips and general Gentoo/Linux information.
glassdoc.org (glassdoc.org): is a Wiki on as many aspects of the material "Glass" as possible. At present it's only set up as de.glassdoc.org but will eventually become available as en.glassdoc.org as well.
Gmail Wiki (www.gmailwiki.com): links and resources on Google's Gmail.
Grokdoc w:Grokdoc: Linux usability
Gueststars Wiki w:Gueststars Wiki (wiki.gueststars.net ): an organisation with the aim of applying the Open Source creative paradigm to general creative cooperation
GuitarChaos Wiki (b100dian.lx.ro/wiki): Guitar tabs / chords, free for any use / purpose. New content is allowed only if improved from existing versions found on web or better: if it's new. Mainly Romanian songs.
GuitarWiki.com (www.guitarwiki.com/): Guitar resource with lessons about the guitar, tablature, a list of guitar terms and more
Hát cho nhau nghe (hatchonhaunghe.net): meaning "sing for one another" - a lovely place for Vietnamese singing people to assist and share songs, feeling, discussing music...
HeiseForenWiki w:HeiseForenWiki: http://www.thewalrus.info/heisewiki/index.php/Hauptseite
HelpDeskWiki (http://www.local.nu/HelpDeskWiki): The free reference for computer help desk support.
Hierarchypedia (www.hierarchypedia.com): Information on people and organisations.
HipHop.net.au (hiphop.net.au): the Australian Hip Hop Wiki
Högkyrklig.nu: a wiki for theology and church matters in Swedish. Content under GNU FDL.
Holopedia.net (www.holopedia.net/): An experimental Wikipedia-like project in Taiwanese (read-only after May 2004 when zh-min-nan: came into existence).
HomeoWiki (www.homeopathy.at): since Nov 2004, collection of material regarding theory & therapy using homeopathy
Homestar Runner Wiki (www.hrwiki.org/): The most complete compendium of information about the popular Internet cartoon site HomestarRunner.com
HorologicalWiki w:HorologicalWiki (www.clockmakers.archivist.info): a Clock and watchmakers wiki GFDL licence
HupWiki w:HupWiki (wiki.hup.hu): Hungarian w:UNIX/w:Linux/w:Free software wiki
Hydrogen Audio ([7]): a resource designed to be a focal point for information related to all facets of audio technology.
ICDNS w:ICDNS wiki (www.icdns.org/wiki): open textbook of neuropathology aligned to an initiative to classify diseases of the nervous system
IdeenWiki (ideenwiki.de): A (german) wiki to drop an discuss brilliant ideas one has but never comes to implement
IndigoWiki (wolfandturtle.net/Indigo/): Information for and by transsexuals and intersexuals
Interactive Fiction Wiki (www.ifwiki.org): A wiki that attempts to build a taxonomy of Interactive Fiction.
infoAnarchy wiki w:infoAnarchy wiki (www.infoanarchy.org/wiki): on file sharing, copyright, cyber liberties, and related issues
infopoint (infopoint.jonobacon.org/): - an group for promoting open source systems at computer fairs
Infosecpedia w:Infosecpedia - an information security encyclopedia: handbook, and how-to guide: http://www.securitygroup.org/pedia/wiki.php?title=Main_Page
InvisibleChat w:InvisibleChat (www.invisiblechat.com): wiki for an IRC network based on w:IIP
iPodLinux (www.ipodlinux.org): wiki for the development of a Linux port to the Apple w:iPod
Portal über Italien (de.italien.ch): EIn online Portal über Italien.]
Java wiki (www.javawiki.com): A wiki describing the Java programming language. Find answers to common questions. Add your own examples!
Jewpedia w:Jewpedia (www.jewpedia.com): first collaborative encyclopedia about w:judaism, currently avaible in French http://www.jewpedia.com, and powered by Torati
Joe Frank Wiki (www.jfwiki.org): An unofficial wiki dedicated to cataloging the work of Joe Frank.
Jurispedia w:Jurispedia (www.jurispedia.org): An Arabic, Chinese, English, French, German and Spanish language WikiWiki law encyclopedia, released under a w:Creative Commons license.
Kent Paranormal Investigations (kpi.mine.nu/wiki): All are welcome to visit.
Kodal bygdeleksikon ([8]): Wiki with local history from the community of Kodal, Vestfold, Norway. In norwegian.
Knoppix Wiki (www.knoppix.net/wiki/): Knoppix is a Linux distribution LiveCD based on Debian GNU/Linux (Knoppix).
krass ( http://krass.com/ ): wiki about techno music in Barcelona, London and Germany
Liber-Integralis (link): French wiki about the Warhammer Universe.
Liberals Against Terrorism ([9]): A site full of information about US antiterrorism and counterinsurgency efforts, containing both a public wiki and a blog.
Libertarian Wiki (libertarianwiki.org): encyclopedia to promote w:libertarianism by facilitating activism.
Link Exchange Directory (kombiz.com/wiki/index.php/Internet:Directory): Link Exchange. All are welcome.
Linux/MIPS Wiki http://www.linux-mips.org/wiki: A wiki aimed to document Linux/MIPS, a port of Linux to MIPS processors.
LinuxQuestions.org w:LinuxQuestions.org: This site will allow you to not only learn about all things Linux but will also allow you to share your knowledge. http://wiki.linuxquestions.org/
LitWiki (litmuse.maconstate.edu/litwiki/): is a site dedicated to English Studies, both literary and composition, with a bit of theory thrown in.
LiveSmolensk [10] Wiki dedicated to the Russian city w:Smolensk
LobbyWatch w:LobbyWatch (www.lobbywatch.de): collecting information about lobbyism in Germany
LoopZillaWiki (LoopZillaWiki): Sources, sinks and links.
Lyrics Wiki (lyrics.crosscourt.org): A wiki-based lyrics database. Effort to create correct and complete lyrics by using the community process instead of a set number of admins.
Lyrics Wiki (www.lyricswiki.org): A wiki community for song lyrics.
MaatWorks (maatworks.wikinerds.org): The software engineering project of the Wikinerds Community
MacHackers (www.machackers.de): public "notepad" of the german Macintosh scene
Man-Wiki (www.man-wiki.net): intended as a reference for Linux man-pages
Marvel Database Project (www.marveldatabase.com): The largest reference library about (Marvel Comics) on the net.
MCE 2005 (MCE 2005 - Windows Media Center Edition 2005 Resources): MCE 2005 - Windows Media Center Edition 2005 Resources .
Medipedia (www.medipedia.org): A GNU/FDL Free Medical Encyclopedia. English, Spanish, German and French interfaces.
Memory Alpha w:Memory Alpha (www.memory-alpha.org): a en:Star Trek reference
Military Mail Infos (www.bw-feldpost.de/mediawiki): pictures and of course many cards and letters from soldiers of various nations delivered by APO's:
Military History Wiki (www.militaryhistorywiki.org): A free Military History Encyclopedia.
Millstone Community Wiki (community.millstone.org): Millstone Community Wiki
MontelLUG (www.montellug.it/wiki): Montebelluna Linux User Group (ITALY)
Motorsport (www.motorsport-sim.org/mediawiki): the goal of this open source project is to become the most realistic driving simulator.
MozillaZine Knowledge Base (kb.mozillazine.org/index.phtml?title=Knowledge_Base): , all about the various w:Mozilla projects.
MoztwWiki (wiki.moztw.org): Community workspace for Mozilla Taiwan
MVlife Open Source w:MVlife Open Source (www.mvlife.com/wikimvlife/)
Naming Schemes (namingschemes.com): Fun wiki useful for browsing naming schemes
NerdyPC (www.nerdypc.org): Hardware Review Site and Information Technology Knowledge Base. A project of the Wikinerds Community.
Newlimits (www.newlimits.org): est un site dédié aux techniques alternatives. Newlimits is a site dedicate to alternative's technics (French).
NSwiki (ns.goobergunch.net): A wiki enclyopedia for the online game, NationStates
Numispedia ([11]): A german language Numismatic-Enclyopedia
NYWiki (www.nywiki.com): , a wiki about New York City, including annotated street maps
OekonuxWiki (en.wiki.oekonux.org.uk): wiki of the w:Oekonux project. Topic: Can free software serve as the base for a new society?
OpenFacts w:OpenFacts: a wiki dedicated to collaboratively working on w:open source software documentation in multiple languages: http://openfacts.berlios.de/index-en.phtml?title=Main_Page
OpenPoetryProject w:OpenPoetryProject ([12]): wiki about poetry and poets, information for students and teachers
OpenTom wiki (wiki.opentom.org)
OpenTTD wiki (wiki.openttd.org/index.php/Main_Page): for writing the manual for the Transport Tycoon clone OpenTTD
OPwiki w:OPwiki: a wiki in German about online publishing: http://linding.ch/op/opwiki/
OrangutanMedia (appserv.lsi.upc.es/palangana): Related to històrical, social and ethical aspects of TIC. Its in the Technical Univestiy of Catalunya. Spanish/English/Catalan
OTAS, the Open Tsunami Alert System (OTAS Main Page): An open-source project to build a non-governmental tsunami alert system for third-world countries.
OurAnswer w:OurAnswer: responses to talks and speeches made by politicians, business leaders and other important people: http://www.ouranswer.org/
OurNottingham: a MediaWiki based comprehensive guide to the city of Nottingham, England : www.ournottingham.net
Parapedia: A german Wiki about Grenzwissenschaften and Kryptozoologie : www.parapedia.de
PA-Wiki (PA-Wiki on Keystone Politics): The encyclopedia of Pennsylvania politics.
PANtheon (www.e-pantheon.tk): Dutch wiki deticated to mythology.
PedalPedalWiki([13]): Attempt at a complete documentation of the history, tricks, bikes, people, places and ramps of BMX Bike Stunt Riding.
Perrypedia: a Perry Rhodan encylopaedia http://www.perrypedia.proc.org/
PESWiki.com (peswiki.com/): specializing in 'free energy' technology, using wikimedia to build encyclopedia, news, open sourcing technology, events, PAC, academy, library and more.
PittsburghForum (forum.for-pgh.org): A collection of arguments on various issues. Based in Pittsburgh, but all are welcome to participate. Can be considered a demo site for Wikibate.
PittsburghPlatform (platform.for-pgh.org): Collaborative development of a political platform for local candidates. Currently supporting a mayoral candidate.
Plog4U (www.plog4u.org www.plog4u.de): Eclipse Wikipedia Plugin and Eclipse Plugin Tutorials, Tips and Tricks (english/german)
Potterpedia (maennerseiten.de/harry_potter/wiki/index.php/): German Wiki for Harry Potter Fans
PRwiki (www.prwiki.org): , 'New' a wiki for and by Public Relations and Communication Educators, Researchers and Practitioners.
PTWiki (www.powertabs.net/wiki/): , a wiki for the Power Tab Editor and Power Tab Archive
Queerwiki.org (www.Queerwiki.org): The Free Guide to Gay Travel, Culture and Education.
RadioTux Wiki (wiki.radiotux.de): German Web-Radio for OpenSource
Rap Dictionary (www.rapdict.org): The Rap Dictionary is the oldest and ultimate resource for looking up hip-hop slang.
ReiseWiki (reisen.wikiwelt.de): is a German Wiki providing personal travel experiences
RexDB (www.rexroderecords.com/wiki/index.php/Main_Page): RexDB is an online contact database with a focus towards those in the music industry looking for contacts. While currently very little is available, the database looks to become the defacto contact ___location for any musician. Not only does RexDB provide contact information, it allows those who use the service to add to the list of available contacts by allowing users to edit the pages they find necessary. There are instructions available on each section of the database.
RezepteWiki (in German) (rezeptewiki.de): , allerlei Rezepte für jede Gelegenheit. Von allen, für Alle und vor allem für diejenigen, die genug haben von dialer- und virenverseuchten Kommerz-Scherz-Seiten
Rhythm Action (www.rhythmaction.com): A wiki devoted to rhythm action games.
Saltspring Ecovillage Education & Development Society (IslandSeeds.org): a wiki for developing an ecovillage.
Sanctuary Storyverse (http://sanctuary.storyverse.net): An Online Writing Project in the Creative Commons for making derivative works of the Sanctuary Science Fantasy universe.
SAUwiki (SAUwiki.com): is wiki for the students of w:Southern Adventist University
ScienceProblems w:ScienceProblems: a collection of problems, exams and their solutions for undergraduate and graduate students of science and engineering. Available at http://scienceproblems.com
SecurityForest (http://www.securityforest.com): SecurityForest.com is a collaboratively edited Forest consisting of Trees which anyone can contribute to. SecurityForest's trees are specific security repositories that are categorized for practical reasons.
SFwiki w:SFwiki: a comprehensive science fiction and fantasy encyclopedia, http://www.infoshop.org/sf/index.php/Main_Page
Sigils of Seven (Sigils of Seven): A MediaWiki occult resource project, primarily focusing on an creating an index of spiritual entities.
Soccer replica jersey (www.truefootball.com): collection featuring a information and history of hundreds of soccer jersey from all the world.
SocSci (mads.warhead.org.uk/socsci/wiki/): is a Wiki dedicated to the social sciences. At this time subjects include, political science, sociology and economics.
SourceryForge w:SourceryForge: "a general purpose resource on esoteric subjects." http://sourceryforge.org/wiki.phtml?title=Main_Page
SpongeBob SquarePants Wiki (spongebobwiki.tk): SpongeBob SquarePants information.
SSonicNET Database (http://ssonicnet.database.com): Open database focusing on Sonic the Hedgehog and the software and hardware that the games are powered on.
Stamps Glossary (www.stamps-auction.com/glossary/index.php/Main_Page): , for people collecting stamps, covers, postcards
Stockepedia w:Stockepedia: an encyclopedia of stocks
StopCrime A South African forum for discussing issues relating to the high crime levels and provide a forum for victims to share their stories.
Sun Servers 101 (www. Sun Servers 101 .com): HowTos, Tutorials and FAQs for Sun Servers
Swarm Wiki: under construction: http://cscs.umich.edu:8123/wiki/Swarm_wiki
Symbolwiki w:Symbolwiki (www.symbolwiki.org): a multilingual project for collaboratively designing pictographs (based on Chinese) representing basic human concepts. Designed to be ideal for assembly as a high-level visual language that bypasses w:phonetics. Uses the w:GNU FDL.
Tab Wiki (www.tabwiki.com): A guitar tab archive, wiki-style. Allowing anyone to edit the tabs should result in a very large and accurate archive.
TARDIS Index File (tardis.wikicities.com): a collaborative project to create the most definitive, accurate, and accessible encyclopedia and reference database for everything related to Doctor Who.
Tech-FAQs (www.tech-faqs.com): Tech-FAQs intend to cover most aspects of Computers & Technology, providing simple FAQs and also help and HOWTOs.
Teleformpedia (redteleform.me.gov.ar/nodo_mecyt/pedia/): documentador de la Red Federal de Teleformación
The Xbox Linux Project (www.xbox-linux.org): a project to run Linux on an Xbox
The Metaweb w:The Metaweb: currently annotating w:Neal Stephenson's novel Quicksilver.
The Poser Encyclopoedia (The Poser Encyclopoedia): A community-driven resource guide & encyclopedia for Poser 3D Artists & Enthusiasts.
The Site With The Lamp ([www.raditha.com/wiki]): A site with a collection of articles on LAMP and related technologies.
Thelemapedia (Thelemapedia.org): All about the culture and religion known as Thelema, including hermeticism, magick, mythology, astrology, Qabalah, and ritual.
Theopedia.com (www.theopedia.com): A wiki dedicated to Christian theology. Encyclopedia of "all things Christian." An evangelical site.
This Might Be A Wiki (www.tmbw.net): A wiki dedicated to the band [They Might Be Giants].
Trutheism.com (www.trutheism.com): , "A website that's about protecting and upholding The Truth, The Whole Truth and Nothing But The Truth": http://www.trutheism.com/
Tulipedia (www.tulipedia.org): , an encyclopedia on Calvinism.
TurboWiki (turbid.us): An open Wiki for all topics and discussions. The serious, the silly, and the just plain stupid can be found here.
Tuxfutter: a german wiki for users who want to migrate from Windows to Linux. http://www.tuxfutter.de
Ultronomicon (http://uqm.stack.nl/wiki/ ): A Wiki dedicated to providing information on the Star Control series, and serving as a knowledge repository for The Ur-Quan Masters, an open-source game.
Uncyclopedia (http://mrpalmguru.com/uncyclopedia/index.php?title=Main_Page): A parody of Wikipedia
Underverse (http://www.underverse.org): Be Inspired, Join The Collective, Share in the Hivemind, Bootstrap your Consciousness -- Adelaide Arts Community
Unilang w:Unilang Wiki: "a community for and by language freaks", http://eu.unilang.org/wiki/
Unix.se (unix.se): a Swedish wiki about all things Unix.
Unmaintained Free Software (www.unmaintained-free-software.org): A GNU FDL-licensed wiki of unmaintained/orphaned Free Software projects which are in need of a new maintainer.
VOC Wiki (ubc-voc.com/wiki): the UBC Varisty Outdoor Club Wiki - for self propelled outdoor recreation in southwest British Columbia, Canada.
Vegan Club Wiki (www.veganclub.com): A Wiki for the vegan community
Video Games Wiki (www.videogameswiki.com): A Wiki for all things video games
Wog Coalition (http://www.WogCoalition.org): a website for Wogs to talk, and share information.
WeeKee (in french) (fr.weekee.org): a Canadian general OpenContent wiki. (english language version)
Welshpedia (www.welshpedia.co.uk/wiki/wales): open encyclopedia about Wales.
What Does That Mean? http://www.whatdoesthatmean.com This site is a free lexicon of English idioms, words, and catch phrases from around the world.
Wiked (moodle.ed.uiuc.edu/wiked): Wiki for education and education research.
Wiki de Disciplinas (tainha.lab.ic.unicamp.br): Wiki de Disciplinas do Centro Acadêmico da Computação da Unicamp/BR (Wiki of Courses of computation students in State University of Campinas/Brazil]
WikiFicciones (www.wikificciones.com): Dedicated to readers and writers of Science Fiction (Spanish) - Dedicado para lectores y escritores de Ciencia Ficción en español.
WikiGames.net (http://www.wikigames.net): A public repository for game information and strategies, especially MMORPG games such as World of Warcraft.
Wiki Sex Site (www.wikisexsite.com): The first sex site to use wiki tecnology to build a sex encyclopedia and a pool of sex stories for adults. http://www.wikisexsite.com
wiki.openap.net (wiki.openap.net): German Wiki for coordinating the build-up of a free 802.11 network at lower-rhine/nrw/germany. Wiki starts at midmonth of october.
Wiki.Typhon.net (wiki.typhon.net): Public wiki (in french) for Typhon.net's websites users.
wiki.typo3.org (wiki.typo3.org/index.php/Main_Page): (english, french, german, more...) TYPO3 documentation project wiki. This Wiki collect and centralize any documentation effort related to the TYPO3 CMS. Feel free to join our documentation effort.
Wikia (wikia.com/wiki/): A wiki-based free-content search engine.
WikiCode (wikico.de): A German Wiki for Programmers.
WikiCulture (www.wikiculture.org/): a wiki-based knowledge base on natural sciences (mathematics, computer science, etc.) mainly in Chinese and cultural topics in both Chinese and other major foreign languages: http://www.wikiculture.org/
Wikidemia (www.wikidemia.org): WIKI based academic discussion site.
WikidWeb (www.wikidweb.com): Wiki Internet directory - like the open directory project, but editable by anyone.
WikiF1.org (www.wikif1.org): Motorsports encyclopedia with content under the Creative Commons nc-by-sa License (currently just in French - multilingual with the help of volunteers)
Wikilaw w:Wikilaw: leverages wiki version control to monitor the evolution of (currently : french) law: http://wikilaw.free.fr/
WikiMD.org (www.wikimd.org): Open Source Medical and USMLE encyclopedia A new Dedicated Wiki building an w:Open Source Medical w:Encyclopedia
http://wiki.mozilla.org/: A wiki for the Mozilla project
Wikimovies (www.wikimovies.net): Wiki based site about Movies, Actors and Soundtracks
Wikinations (fr.wikinations.org): a community building practical encyclopedia for citizens (French)
WikiP2P (www.wikiP2P.com): The P2P documentation center (in french).
wikiRPG (www.invariant.org/media): A collaborative attempt to make a universal pen-and-paper RPG engine.
Wikitravel w:Wikitravel: a wiki-based travel guide: http://www.wikitravel.org/
WikiWikiWalks (porpoisehead.net/wikiwikiwalks): Site for walking enthusiasts in Northumberland, UK.
WikiWood (www.wikiwood.com): , a user-grown wood working and related reference: http://www.wikiwood.com
Wombat: the Planet Magazine, Free Bazaar: http://now.ohah.net/en/ (http://now.ohah.net/ja/ Japanese)
WordPress Codex (www.codex.wordpress.org): Striving to be a complete reference source for the open-source blogging tool, WordPress
World Wind Wiki (wiki.worldwindcentral.com)
WormWiki: the free Worms encyclopedia: http://wiki.fullwormage.com/
www.kaffeewiki.de (www.kaffeewiki.de): German Wiki for Espresso Fans
www.kombiz.com (www.kombiz.com/wiki): Travel, Hotel, Web Hosting and Certification
XuuuuWiki w:XuuuuWiki (www.xuuuu.com/wiki): a Simplified Chinese Wiki About SoulSeek
XP-Swiss (xp-swiss.org): a wiki about Extreme Programming is Switzerland (mainly in french)
XyloWiki: the Xylobot script wiki: http://xylowiki.franciscrick.com/wiki.phtml
Yaunopedia: (German) Free Syriac Encyclopedia: http://www.yaunopedia.org
ZRHwiki (www.zrhwiki.ch): A free encyclopedia on Zurich Airport (Flughafen Zürich in German):

Public personal wiki installations

Adam's personal wiki: http://www.gessaman.com/wiki/
AlpineWiki, Aaron Lee Peterson's information exchange. Free Software and Personal Info
Anderswiki, a german wiki for everything that is different. (offline or hacked?)
AuburnMedia Wiki is a resource for classes in public relations and marketing communications.
AWARE ARG Guide is a player maintained guide for the Alternate Reality Game AWARE. The game is played primarily online with real world elements to make it more fun.
Baseball Think Factory Wiki : Public Wiki for answering the FAQ of [14]
Software Engineering Laboratory : for STT Telkom - Bandung
CenterLeft.net - blog and travel information repository
Eric Shao-yu Cheng: http://fractal.csie.org/~eric/wiki/Main_Page
CincyWiki: Open Source Government in Cincinnati, Ohio.
a wiki for FIRST: Ultimate Robot Challenge, a game being developed by FIRSTers to digitally recreate the FIRST Robotics games. (Caution: a little slow)
The Gentoo-Portage Wiki Created to give people a place to put HOWTOs, tips and general Gentoo/Linux information.
Hwasung Mars' wiki Covers Physics, Mathematics, GRE test, and furthermore contents
Liao's wiki for personal online notes
II-Wiki, created by the Comp Sci institute of w:UFRGS, a Brazilian Public University.
Iluvitar's wiki http://www.iluvitar.com/sections/wiki/ (the skin is not selectable and different from the usual three)
Inside Magic A Site for the Free Exchange of News, Reviews and Ideas Concerning the Art of Magic as Entertainment.
KiwiMusic.Info A wiki database for New Zealand music.
Marcom Wiki is a collaborative site involving Marcom practitioners from around the world and students at Auburn University in Alabama. The site also has a [collaborative group blog] entitled MarcomBlog.
MBApedia an open and free busness encyclopedia. Hosted by a University of Michigan Business School student.
Nancy is a repository for, well, stuff. Mostly anime and videogame related. Not editable by the public.
Lebensreform, Project about the Lebensreform movement (in German).
Means and Ends, a site for a game of Nobilis (a role-playing game), running a version of the Wikimedia code modified slightly by S. Ben Melhuish
meditorworld, a MathML-in-MediaWiki proof of concept (MathML capable browser needed, tested to work with Mozilla).
Mineralienatlas wiki: http://www.mineralienatlas.de/phpwiki/
OberWiki for Oberlin College
Open Hatch, Alex Hall's amusements, creative projects, pontifications
The Othello Wiki Book Projekt
Phat Matt's Wiki Matt Fletcher's Personal Wiki, used by friends and family mainly.
Phy-d'eau Conceptual fluid, to collaborate on creative projects. The idea is to expose our projects and hope that these efforts inspire one another's writing, art, music, etc.
Plastic Tub Repository of Associationalist history, documents, art.
[15] PotatoWiki.
SockLabsWiki a personal refference and dictionary
Riktning.com Riktning.com wiki, a wiki about NLP and the Riggiomodel.
SwingWiki - Can a wiki help you dance better?
TriPU Documentation wiki for the TriPhoenix homebrew CPU project
Ursine, a wiki searching for topics.
Uruguay Orlando is a nonprofit organization dedicated to help Uruguayan inmigrants living in Orlando and all Central Florida area. We are experimenting wiki in some sections of our web site to create a dinamic comunication medium between the people living in USA and between their relatives in Uruguay
UTWiki | 自助户外咨询Wiki, a wiki for sef-help ourdoor travel
VDR Wiki a Wiki Manual for the digital VDR (Video Disk Recorder)
Western Wiki, "a free forum" wiki for Western College, w:Miami University
WestGuard, a site for a game of Champions (a role-playing game), using a XHTML and CSS standards-compliant skin by Brandon Blackmoor
Wiki of the Squid, an electronic journal of a Dark Sun campaign run by Has Chaudhuri
Zefania XML Wiki, a german wiki for Zefania XML Biblesoftware.
Victoria, a wiki about a web comic called The Midlands. Also home to an extensively organized archive of Midlands strips.
Kalez, a wiki about a group of friends! (Italian)
WickleWiki a wiki to maintain and coordinate development projects, and their documentation.
Winslow's Lair Wiki, a personal wiki
Tome of Dorgoth, a Wiki campaign world for the role-playing game Dungeons and Dragons (English; anyone can contribute)
SparkWiki, a personal wiki
The Site For Sore Eyes -- A collaboratively-edited 'resource-dump turned knowledgebase'.
Sense-Think-Act A collection of exercises which refer to elemental human abilities - in development.
Rafael's Personal Wiki A joint of several thing
HermitWiki A Hermit Crab wiki encyclopedia
oddWiki Personal wiki of Abraxas/fabulous
Partout.NET Partout's personal wiki
Hdub, Hart Wilson's (CyborgTosser) personal wiki.
WikiWegge - A personal Wiki in danish.
Dehumanizer's Wiki - A personal Wiki, with thoughts, opinions, rants and technical articles.
Le Grimoire - Wiki about litterature
OpenMDA - Wiki about maritime related stuff (vessels, companies, history, ....)
Wiki Vev Personal wiki of Vev in french
维基法国 Personal wiki project of 法兰西之歌 in chinese
WikiDahrma Personal wiki project in Japanese for Buddhism related contribution: all content will be finally contributed to Japanese Wikipedia after proofread.
The Boxing Wiki: Site for information on the sweet science.
cat.krass.com : Cats private home page, with info about Barcelona
damian.net : Damian Family wiki
wiki.sunbase.org : Sunny256's wiki which is used to collect various info. Also used for drafts for Wikipedia articles. Mostly in Norwegian.

Private company wiki installations

ASPM
w:Gartner
FireBright, Inc. The Open Source CMS company.
Aperture Technologies, Inc. see NickP
Creative Usa Corporation web design and consulting company.
Mvlife
Omnistrong small business marketing
Sydney Boys High School Debating Contribution System
Adam Internet
IT/Linux Days event planning
NVIDIA uses MediaWiki for some internal documentation
BELNET the Belgian research and education Network, uses MediaWiki for internal documentation
w:Novell as the official internal Wiki implementation
InterAKT Online, a Dreamweaver extensions maker, uses MediaWiki for spec'ing the next generation of its products
log internet consulting, a opensource consulting firm in Portugal
MTA SZTAKI, Computer and Automation Research Institute of the Hungarian Academy of Sciences for internal documentation at Internet Applications Department
Travel Penguin, Open World's latest travel portal uses MediaWiki as a content management system for the destination guides.
Advanced Gaming Systems, Internal Wiki to faciliate agile development of "The Next Harpoon".
4Bridges eLearning Systems uses MediaWiki for internal documentation and for their Employee Handbook.

Other

en:Distributed Proofreaders' software uses MediaWiki's difference engine for viewing differences between proofed pages.
jôhô shakai [情報社会] is a collaborative wiki project maintained by students of the ICT&S Center @ The University of Salzburg.
MarcomWiki is intended for my public relations classes for projects and introducing students to CMS applications
cmos.name is a web presentation of a hacker group which uses MediaWiki as some form of content management system with modified stylesheets hiding the wiki functionality to a normal visitor
Globatic is a spanish company that uses MediaWiki to content usefull internal documents
LPT Wikipedia, is an encyclopedia about GNU/Linux in Hispanic speech.
Aixmarseille.com contains resources concerning linux, wireless, security ...
Union of International Associations, INGO providing information on the global civil society, uses MediaWiki for internal documentation.
NUCAPT, Northwestern University Center for Atom Probe Tomography

Commercial providers of Mediawiki hosting

These host Mediawiki wikis for others to make money, either from ads or fees.

Portable (with full database access)

This includes hosts of completely independent Mediawiki projects (those where each project has complete access to its whole database, so it can switch host by creating a database dump and loading it at the new hosting provider).

Vacilando.org. Are database dumps available? Appears to be a web host which offers Mediawiki installation service.

Non-portable (without full database access)

This includes hosts where limitations make it hard or impossible to transfer a project to a different hosting provider.

(wikicities.com): A collection of wiki communities. No portability between sites (shared user table, hence no user table access, so you lose your users data if you switch host). Don't know if the rest of the database is available.