Wikimedia project

A is a -based community project run by the , 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 .

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

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.

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".

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

The Foundation also hosts various – such as those for the Chapters Committee, Board of Trustees, OTRS, and – and various – for specialized groups such as Outreach, the regional Chapters, and thematic organizations.

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