Web APIs

The content of allWikimedia projects is released under free licenses. Write code to access, remix and grow this immense pool of free knowledge.Follow the tutorial to get started with theAPI, available on all MediaWiki wikis, and other APIs for content and Wikidata. Otheropen data sources, includingXML and SQL dumps, are also available.

Software Development

Our code is all free and open source.Choose a project, provide a patch, and fix a task!

Wikimedia projects use a variety of languages such as PHP and JavaScript inMediaWiki and itsextensions, Lua (inTemplates), CSS/LESS (inskins etc.), Objective-C, Swing and Java (inMobile Apps andKiwix), Python (inPywikibot), C++ (inHuggle), or C# (inAWB).Createbots to process content andhost your tools on Toolforge. Hack onmobile apps or on desktop applications. Or helpSite Reliability Engineering maintain theserver configuration.

Learn more atNew Developers/Introduction to the Wikimedia Technical Ecosystem.

Testing

Help improve the quality of our projects throughPHPUnit testing, automated browser testing viaSelenium, andContinuous Integration.Report your first bug or help with existingbug reports.

Ambassadors

As aTech ambassador,help other Wikimedians with technical issues, relayTech News to inform users about what is going to impact them, and join theambassadors' group and themailing list to act as a bridge between developers and your local wiki.

Documentation

English writers can improve theMediaWiki documentation, otheressential support pages and, in fact, any page of this website.

Translation

If you are fluent in a language other than English you can join the effort bytranslating this website and theMediaWiki software.

Support

Help users and developers looking for answers at thesupport desk or the MediaWikicommunication andsocial media channels.

Design

Help apply theWikimedia design principles in projects looking for UX feedback.

Meet up

Meet other community membersonline orin person.

Tutorials

How-to guides and walkthroughs for MediaWiki and Wikimedia technologies

• There are several ways you canget into contact with the Wikimedia community.
• Follow and share Wikimedia news across yoursocial network.
• Subscribe toTech News to receive a weekly summary on your user talk page of recent software changes, without technical jargon.
• Learn aboutediting wikis as a developer.

If you have not used MediaWiki before:

• Register your user account on mediawiki.org.
• Learn how to edit wiki pages with VisualEditor orediting the source.
• Feel free to edityour public user page. Introduce yourself. You may use theUser Info Template. Learn more reading theWikipedia instructions.
• CheckHelp:Navigation.
• You can discuss the content of each page in its related Discussion page. You can communicate with users by adding a public message in their discussion pages. Learn more atHelp:Talk pages.

• MediaWiki development
• MediaWiki.org website
• New contributors