Contributors/Projects

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)
 * 2017 wikitext editor

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

Collaboration team

 * Edit Review Improvements, a project researching ways to reduce the negative effects current edit-review processes can have on new editors to the wikis.
 * Echo (Notifications), a notification system (Extension:Echo)
 * Flow, a discussion and collaboration system (Extension:Flow)
 * Thanks, allows users to thank other users for individual edits

Maintained, supported, and related collaboration tools

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

Multimedia
See Multimedia.

Language
See Wikimedia Language engineering.

Parsing
See Parsing.

Analysis
See Editing/Analysis.

Other responsibilities
The Editing department is also generally responsible for these areas, although they don't belong to a specific team within the department:
 * User accounts, preferences, and registrations