Original author(s)
Developer(s)Wikimedia Foundation
Initial releaseJanuary 25, 2002 (2002-01-25)
Stable release
1.40.1[1] Edit this on Wikidata / 28 September 2023 (28 September 2023)
Written inPHP[2]
Operating systemWindows, macOS, Linux, FreeBSD, OpenBSD, Solaris
Size63.4 MiB (compressed)
Available in459[3] languages
TypeWiki software
LicenseGPLv2+[4] Edit this at Wikidata

MediaWiki is free and open-source wiki software originally developed by Magnus Manske for use on Wikipedia on January 25, 2002, and further improved by Lee Daniel Crocker,[5][6] after which it has been coordinated by the Wikimedia Foundation. It powers most websites hosted by the Foundation including Wikipedia, Wiktionary, Wikimedia Commons, Wikiquote, Meta-Wiki and Wikidata, which define a large part of the set requirements for the software.[7]

MediaWiki is written in the PHP programming language and stores all text content into a database. The software is optimized to efficiently handle large projects, which can have terabytes of content and hundreds of thousands of views per second.[7][8] Because Wikipedia is one of the world's largest and most visited websites, achieving scalability through multiple layers of caching and database replication has been a major concern for developers. Another major aspect of MediaWiki is its internationalization; its interface is available in more than 400 languages.[9] The software has more than 1,000 configuration settings[10] and more than 1,800 extensions available for enabling various features to be added or changed.[11]

Besides its usage on Wikimedia sites, MediaWiki has been used as a knowledge management and content management system on websites such as Fandom, wikiHow and major internal installations like Intellipedia and Diplopedia.

  1. ^ "Security and maintenance release: 1.35.12 / 1.39.5 / 1.40.1". September 28, 2023. Retrieved September 29, 2023.
  2. ^ Reed, Sam (December 19, 2019). "Announcing MediaWiki 1.34.0". mediawiki-announce (Mailing list). Archived from the original on December 19, 2019. Retrieved December 19, 2019.
  3. ^ "Names.php  • mediawiki". April 8, 2021. Archived from the original on July 15, 2021. Retrieved May 19, 2021.
  4. ^ "Copyright". Archived from the original on September 19, 2015. Retrieved September 7, 2015.
  5. ^ Magnus Manske's announcement of "PHP Wikipedia", wikipedia-l, August 24, 2001
  6. ^ Barrett, Daniel J. (October 2008). MediaWiki. O'Reilly Media. ISBN 978-0-596-51979-7. Retrieved April 23, 2010.
  7. ^ a b "What is MediaWiki?". MediaWiki. January 9, 2021. Archived from the original on July 22, 2018. Retrieved March 27, 2021.
  8. ^ Česky. "Wikipedia:Statistics – Wikipedia, the free encyclopedia". Wikipedia. Archived from the original on August 28, 2021. Retrieved May 30, 2010.
  9. ^ Cite error: The named reference translation statistics was invoked but never defined (see the help page).
  10. ^ "Category:MediaWiki configuration settings". MediaWiki. September 11, 2016. Archived from the original on November 10, 2014. Retrieved September 11, 2016.
  11. ^ "Extension Matrix". MediaWiki. Archived from the original on September 11, 2016. Retrieved September 6, 2017.

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