Wikimedia project

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The Wikimedia projects logo family

A Wikimedia project is a wiki-based community project run by the Wikimedia Foundation,[1] a nonprofit organization founded in San Francisco, California in 2003. The Foundation operates many free software and free content projects, listed below, which are developed by volunteers of the Wikimedia movement.


Content on most Wikimedia Foundation websites is licensed for redistribution under v3.0 of the Attribution and Share-alike Creative Commons licenses. This content is sourced from contributing volunteers and from resources with few or no copyright restrictions, such as copyleft material and works in the public domain.

The order in the table below is as listed in the Wikimedia SiteMatrix.

Logo Name Web address Launched Description Editions
Wikipedia 2001-01-15 Encyclopedia articles 291 languages
Wiktionary 2002-12-12 Dictionary, including etymologies, synonyms, and translations 172 languages
Wikibooks 2003-07-10 Educational textbooks and learning materials 121 languages
Wikinews 2004-11-08 News source 33 languages
Wikiquote 2003-07-10 Collection of quotations 89 languages
Wikisource 2003-11-23 Library of source documents and translations 65 languages[* 1]
Wikiversity 2006-08-15 Educational and research materials and activities 15 languages
Wikivoyage 2003-07-24 (Wikitravel founded)
2006-12-10 (fork)
(2013-01-15 adoption by WMF)
Travel guide 17 languages
Wikimedia Commons 2004-09-07 Repository of images, sounds, videos, and other media files 1 (multilingual)
Wikimedia Incubator 2006-06-02 Testing possible new languages for existing projects 1 (multilingual)
Meta-Wiki 2001-11-09 Coordination of the other Wikimedia projects 1 (multilingual)
Wikispecies 2004-09-14 Directory of species data on all forms of life 1 (multilingual)
Wikidata 2012-10-30 Knowledge base 1 (multilingual)
Wikimania 2005-08-04 Wikimania conference websites 1 for each year
  1. ^ An additional multilingual Wikisource hosts texts in obscure languages as well as texts which are themselves multilingual

The only Wikimedia Foundation project which has been closed and deleted is the September 11 Memorial wiki, which was created shortly after the September 11, 2001 terrorist attacks.

Language codes

Wikimedia projects use language codes to identify language specific editions of a Wikimedia project. The codes are often used as a subdomain, e.g. for the Wikipedia editions it is a subdomain below Interlanguage links in the English Wikipedia are sorted by that code.

The codes mostly correspond to the language codes defined by ISO 639-1 and ISO 639-3, and the decision of which language code to use is mostly in accordance with the IETF language tag policy.

One code is not a language code ('be-x-old') but refers to a specific orthography.

Codes that do not agree with the ISO 639 meaning or are deprecated

Several codes are used for project editions where the ISO 639 meaning is different from the content contained in the project.[2]

This makes the codes partially "not useful".[3]

Project codes

WP edition name WP code ISO 639 code Meaning of WP code if read as ISO 639 code Note
Albanian als Broader meaning than edition content: Macrolanguage, Albanian with four individual languages, but Tosk Albanian is mainly used. 'als' is the individual code for Tosk Albanian, but this code is already used for Alemannic Wikipedia.
Alemannic gsw Unrelated language: Tosk Albanian.[4] 'gsw' is the ISO 639-2 and -3 code for Swiss German, Alemannic and Alsatian. 'gct' is the ISO 639-3 code for Colonia Tovar dialect, 'swg' is for Swabian German and 'wae' is for Walser German.
Arabic Broader meaning than edition content: Macrolanguage 'ara'/'ar' [5] is Arabic in general. Egyptian Arabic Wikipedia uses code 'arz'. Modern Standard Arabic has the code 'arb'.
Aromanian rup (Not an ISO code.) 'roa' in ISO is Romance (Other).
Banyumasan (Not an ISO code.) 'map' is Austronesian (Other), bms is Bilma Kanuri, a language of Niger.
Dutch Low Saxon (several) (Not an ISO code.) 'nds' is 'Low Saxon', restricted to Germany in Ethnologue. The Low Saxon dialects in the Netherlands have their own ISO codes.
Belarusian (Taraškievica) (Not an ISO code.) Valid would be 'be-tarask'.
Bihari (several) Broader meaning than edition content: collective code 'ISO 639:bih' includes Bhojpuri bho, Maithili mai, Magahi mag and nine others[6]
Yue yue (Not an ISO code.) This is a Chinese Wikipedia in written Cantonese.
Chinese cmn Broader meaning than edition content: Macrolanguage 'zho'/'zh' [7] is Chinese in general. Chinese Wikipedia is written in modern written vernacular Chinese with four standard forms.[a] Modern written vernacular Chinese is based on modern Mandarin (cmn).
Classical Chinese lzh (Not an ISO code.)
Min Nan nan (Not an ISO code.) 'min' is unrelated. This is a Chinese Wikipedia in written Hokkien POJ.
Malay Broader meaning than edition content: Macrolanguage that includes more than 30 individual languages/dialects Wiki excludes Indonesian because Indonesian Wikipedia () exists independently.
Norman Unrelated language: Narom [8]
Norwegian Bokmål nb Broader meaning than edition content: Norwegian in general, i.e. Bokmal ('nb'/'nob') and Nynorsk ('nn'/'nno'). Nynorsk correctly uses 'nn'.
Ripuarian Narrower meaning than edition content: Kölsch, one variety of the Ripuarian languages
Samogitian sgs (Not an ISO code.) 'bat' is Baltic (Other), 'smg' is Simbali language.
Serbo-Croatian hbs Deprecated: 'sh' for the Serbo-Croatian Wikipedia has been deprecated.[9]
Simple English en (Not an ISO code.)
Syriac syc not the best match. 'syc' is better suited for the content [10]
Tarantino (Not an ISO code.) 'roa' is Romance (Other).
Võro vro (Not an ISO code.)
Zamboanga Chavacano cbk (Not an ISO code.) 'cbk' is Chavacano. zam is unrelated Miahuatlán Zapotec.

Internal code changes

The following codes have been changed for the mark-up:[11]

  • bat-smg -> sgs (Wikipedia)
  • fiu-vro -> vro (Wikipedia)
  • zh-classical -> lzh (Wikipedia)
  • zh-min-nan -> nan (Wikipedia, Wiktionary, Wikibooks, Wikiquote, Wikisource)
  • zh-yue -> yue (Wikipedia)
  • be-x-old -> be-tarask (Wikipedia)
  • als -> gsw (Wikipedia, wiktionary, Wikibooks, Wikiquote)
  • roa-rup -> rup (Wikipedia, Wiktionary)


  • 'dk' redirects to 'da' [12]
First Day of Issue Cover of the "Wikimania 2011 - Haifa, Israel" stamp, issued by Israel Post on August 2, 2011 - The first-ever stamp dedicated to a Wikimedia-related project.

Usage in Wikimedia projects

Project specific codes


In Wikidata a property named "Wikimedia language code" exists.[14]

Software projects and other backstage projects

  • MediaWiki – a free software open source wiki package and its documentation
    • VisualEditor – a project to provide a "visual" or "WYSIWYG-like" online rich-text editor as a MediaWiki extension to Wikipedia
  • Phabricator – A bug tracker and project management system for MediaWiki[15]
  • Wikitech – Wikimedia technical documentation[16]
  • Wikimedia Labs (aka Labs) – provides cloud computing infrastructure for supporting development and operations engineering[17]
  • Wikimedia Tool Labs (aka tools) – for community developers working on tools and bots that help users maintain and use wikis[18]
  • Test Wikipedia – For testing software changes[19][20]
  • Server status – Current status Wikimedia Foundation – Core services[21]
  • WikiStats – Wikimedia statistics[22]
  • Wikimedia Mailservices – Wikimedia Mailing Lists[23]

The Foundation also hosts various private wikis – such as those for the Chapters Committee, Board of Trustees, OTRS, and Wikimedia Foundation Office – and various public wikis – for specialized groups such as Outreach,[24] the regional Chapters, and thematic organizations.

See also


  1. ^ They are the standards for Mainland Chinese and Singaporean (written in simplified Chinese characters), and Taiwanese and Hong Kong/Macau (in traditional Chinese characters). They are automatically converted by the wiki machine. See Chinese Wikipedia.
  1. ^ "Our projects". Wikimedia Foundation. Retrieved 2013-09-01. 
  2. ^ Nonstandard language codes and Language codes
  3. ^ "This leads to a situation where the Wikimedia Foundation project codes are not useful". 2012-09-03. Retrieved 2013-09-01. 
  4. ^ "ISO 639 code tables". Retrieved 2013-09-01. 
  5. ^ "ISO 639 code sets". Retrieved 2013-09-01. 
  6. ^ "Invalid id". 1999-02-19. Retrieved 2013-09-01. 
  7. ^ "ISO 639 code sets". 2009-01-16. Retrieved 2013-09-01. 
  8. ^ "ISO 639 code sets". Retrieved 2013-09-01. 
  9. ^ "ISO 639 code sets". Retrieved 2013-09-01. 
  10. ^ "Bug 26725 – Renaming the Aramaic (arc) Wikipedia to the Syriac (syc) Wikipedia". Retrieved 2013-09-01. 
  11. ^ "Bug 34866 – Change wgLanguageCode of several wikis to be renamed". Retrieved 2013-09-01. 
  12. ^ "Bug 15357 – Redirect dk.wiktionary and dk.wikibooks to da.wiktionary and da.wikibooks respectively". Retrieved 2013-09-01. 
  13. ^ "Wiktionary:List of languages – Wiktionary". 2013-08-02. Retrieved 2013-09-01. 
  14. ^ "Wikimedia language code". Wikidata. Retrieved 2013-09-01. 
  15. ^ "Phabricator". 
  16. ^ "".  External link in |title= (help)
  17. ^ "".  External link in |title= (help)
  18. ^ "".  External link in |title= (help)
  19. ^ "Main Page". Wikipedia, the free encyclopedia. 26 July 2016. 
  20. ^ "Main Page". Wikipedia, the free encyclopedia. 19 September 2016. Retrieved 26 November 2016. 
  21. ^ "Public Website Health Status for Wikimedia Foundation - Core services". 
  22. ^ "Wikistats: Wikimedia Statistics". 
  23. ^ "".  External link in |title= (help)
  24. ^ Outreach