|MediaWiki Handbook: Contents, Readers, Editors, Moderators, System admins +/-|
MediaWiki: Features - Handbook - Sources - Bug/Feature Submissions - The team
Note: the name "MediaWiki" is often confused with several other, similar, names; please see the glossary for an explanation of these.
MediaWiki is wiki software, released under the GPL, that is used by Wikimedia projects and others. It is an implementation of a wiki, a content pool that anyone can freely edit. It is developed using MediaZilla (our version of BugZilla).
MediaWiki 1.20.6 is the latest stable version, and is recommended for third-party users. Those running their own servers should upgrade for security reasons. Special:Version shows what version a site is running. You can play around in the local Sandbox to see this version in action.
Technical developers section
- MediaWiki features
- Installation and configuration
- MediaWiki Tutorial with screenshots: how to install and configure Mediawiki, how to change skins; how to add extensions
At the moment there is a current version maintained for at least one year after its release date, and the last legacy version still getting security fixes. Older versions are considered as insecure. Check out release notes for other versions or go directly to 1.10 - 1.11 - 1.12 - 1.13 - 1.14 - 1.15 - 1.16 - 1.17 - 1.18 - 1.19 - 1.20.
Wikimedia sites 
- During the period 21-29 May 2004, all Wikimedia sites were upgraded to version 1.3.
- In December 2004 all Wikimedia sites were upgraded to version 1.4.
- In June 2005 Wikimedia sites were upgraded to version 1.5.
- In August 2005 Wikimedia sites were upgraded to version 1.6alpha.
- From April 2006 Wikimedia sites were using the continuous development version from Subversion.
- From April 2012 Wikimedia sites have been using a branched copy of MediaWiki master from Git, currently 1.22wmf4 (281e88a). A new branch is made and deployed gradually over a fortnight. See mw:MediaWiki 1.22/Roadmap for the schedule.
Database dump 
To create your own dump of a local MediaWiki site, you can use the dumpBackup.php script found in the maintenance directory of your MediaWiki installation tree.
An example invocation to a full backup might look like:
php maintenance/dumpBackup.php --full > full.xml
Command line options for dumpBackup.php are explained by running it with no parameters, i.e.
However, there are some extra undocumented options in its source code.