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A Wikimedia project is a wiki-based community project run by the Wikimedia Foundation, 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.
Contents
List
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.
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 wikipedia.org. 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.
This makes the codes partially "not useful".
Internal code changes
The following codes have been changed for the mark-up:
Redirects
Project specific codes
Wikidata
In Wikidata a property named "Wikimedia language code" exists.
Software projects and other backstage projects
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, the regional Chapters, and thematic organizations.