Contributors

The Editing department of Wikimedia Engineering works on extending and improving the editing tools used at Wikimedia – VisualEditor and other content tools, Collaboration tools, Multimedia support, Language tools for translation, content and communication, and Parsing. We exist to support new and existing editors alike across desktop, tablet and phone platforms.

VisualEditor team

 * VisualEditor, a stand-alone rich HTML editor with a separate deep integration into MediaWiki
 * WikiEditor (the main wikitext editor on Wikimedia wikis; mostly in maintenance)
 * The basic MediaWiki default wikitext editor inside  (purely maintenance)

Maintained, supported, and related editing-related tools

 * Extension:Babel
 * Extension:BetaFeatures
 * Extension:Calendar
 * Extension:CategoryTree
 * Extension:CharInsert
 * Extension:Cite
 * Extension:Citoid
 * Extension:CiteThisPage
 * Extension:CleanChanges
 * Extension:CodeEditor
 * Extension:CodeReview
 * Extension:Collection
 * Extension:CommonsMetadata
 * Extension:ConfirmEdit
 * Extension:ContactPage
 * Extension:ContributionTracking
 * Extension:CreditsSource
 * Extension:Disambiguator
 * Extension:DynamicPageList (Wikimedia) (aka Extension:Intersection)
 * Extension:EasyTimeline
 * Extension:FlaggedRevs
 * Extension:Gadgets
 * Extension:GeoCrumbs
 * Extension:GoogleNewsSitemap
 * Extension:Graph
 * Extension:ImageMap
 * Extension:InputBox
 * Extension:Insider
 * Extension:LabeledSectionTransclusion
 * Extension:Listings
 * Extension:MapSources
 * Extension:MassMessage
 * Extension:Math
 * Extension:ParserFunctions
 * Extension:Petition
 * Extension:Poem
 * Extension:Proofread Page
 * Extension:Quiz
 * Extension:RSS
 * Extension:Score
 * Extension:Scribunto
 * Extension:SpamBlacklist
 * Extension:SubPageList3
 * Extension:SubpageSortkey
 * Extension:SyntaxHighlight GeSHi
 * Extension:TemplateData
 * Extension:TemplateSandbox
 * Extension:Timeline
 * Extension:TitleBlacklist
 * Extension:TocTree
 * Extension:WikiHiero

Maintained libraries

 * The OOjs library for OO JavaScript development
 * The OOUI library for widget-based front-end development (in PHP and JavaScript)
 * UnicodeJS
 * CSSJanus

Collaboration team

 * Flow, a discussion and collaboration system (Extension:Flow)
 * Echo (Notifications), a notification system (Extension:Echo)
 * Thanks, allows users to thank other users for individual edits

Maintained, supported, and related collaboration tools

 * MoodBar, a feature to encourage new users to provide feedback (Extension:MoodBar)
 * Page Curation, an interface for reviewing new pages (Extension:PageTriage)
 * WikiLove, an extension to encourage expressions of appreciation between users (Extension:WikiLove)

Parsing

 * Parsoid, a bidirectional runtime wikitext parser.