Developers

You may want to see System administrators on Meta.

Poster "sign-in" during the First Developers Conference in Berlin, Germany, on December 29, 2004.

Developers are the people who write the MediaWiki software. They are said to have "commit access" (or to be "committers") if they have access to commit changes to the central Subversion or Git repository where the latest copy of the software is stored. (This is in contrast to having shell or root access to Wikimedia Foundation servers, for instance, which would make them system administrators.) Sumana Harihareswara, as volunteer development coordinator, is usually the one to grant commit access. Information about staff developers can be found at Foundation:Staff.

A list of developers with commit access is reproduced below with some commentary. A full list of people with access to at least one of our Subversion repositories is available at http://svn.wikimedia.org/users.php or http://toolserver.org/~krinkle/wikimedia-svn-users.php.

Those with "root" or "shell" access might not really be developers, but rather system administrators of Wikimedia servers, where the Subversion repository is stored. In many cases they rarely use their commit access, or if they do, only to maintain non-MediaWiki things in the repository. In principle they probably have admin access on Subversion, Bugzilla, and so on if they have some reason to use it, at least in the case of roots.

To see which developers are actually active, try http://www.ohloh.net/p/mediawiki/contributors, which gives nice stalkerish summaries of all sorts of fun statistics.

Active MediaWiki developer accounts

Subversion and GIT accounts

This table may be outdated, because newly created accounts in GIT are inserted manually. If you do have access to GIT and you aren't in this table, please insert your name

Commit name	Real name	IRC nick	Comments
80686	Manuel Schneider	root-80686
a_engels	Andre Engels		Pywikipediabot developer.
aaron	Aaron Schulz	AaronSchulz	General-purpose developer. Maintains CheckUser, FlaggedRevs, ConfirmAccount, Renameuser and some other extensions.
aaronpk	Aaron Parecki		SEO Title Tag extension, Changelog Graphs extension, Glossary extension
abernala
abigor	Huib Laurens	Abigor	Wikiportrait. Administrates MediaWiki-l and wikitech-l mailing lists.
aboostani	Arash Boostani		Former member of Wikimedia Usability Team.
adam	Adam Miller	adam_miller	Usability Initiative developer
adammck
adamw	Adam Wight		Extension:Offline
aigerim	Aigerim Karabekova	aigerim	Release Management (Summer of Code 2011 student)
aj	Andreas Jonsson		Yet another parser project
ajvol	Alexander Sigachov		Russian localization updates
akshay	Akshay Agarwal		Summer of Code 2011 student
alexsh	Shih Han Lin	lin4h	Chinese localization updates, Pywikipediabot developer.
algorithmix	Gero Scholz		DynamicPageList extension
allyunion	Jason Y. Lee		Pywikipediabot developer.
alnokta	Mohamed Magdy		Arabic Planet Wikimedia
amidaniel	Daniel Cannon	amidaniel	Mostly API stuff.
amir	Amir Sarabadani	Amir1	Pywikipediabot
ankitgarg833	Ankit Garg		Summer of Code 2011 student
aphid			Working on MetaVid
appy	Apekshit Sharma		Article Highlight extension
ariel	Ariel Glenn	atglenn	Wikimedia staff
asher	Asher Feldman		Wikimedia Foundation operations
ashley	Jack Phoenix	ashley	ShoutWiki staff member. Maintains SocialProfile extension, other social tools, WikiForum extension and many other delicious extensions, including some from Wikia. Sometimes Finnish i18n too.
aude	Kate	aude-wiki	OpenStreetMap, SlippyMap extension, and other geodata-related goodies.
avar	Ævar Arnfjörð Bjarmason	avar	Shell. Formerly very active general committer, author of Extension:Cite and a fair bit of MediaWiki as we know it. Fourth-highest overall commit count after Brion, Tim, and Rob. Mostly started to work on other projects, hangs around on IRC, commits sporadically planning his triumphant return.
awjrichards	Arthur Richards	awjr	Mobile (WMF staff member)
bachsau	Sven Heinemann		ConfirmEdit extension
bartek	Bartek Łapiński		Former Wikia technical staff member, author of SpamRegex, RegexBlock, EditSimilar and RefreshSpecial extensions.
bawolff	Brian Wolff	bawolff	Various Wikinews-related extensions, Google Summer of Code 2010 student
beckr			Extension:SlippyMap
ben	Ben Hartshorne		Wikimedia Foundation staffer (operations engineer)
benjamin	Benjamin Peterson		EditCount extension
bhagya			QA engineer for Calcey Technologies, will be committing Selenium tests to /trunk/testing/selenium; account disabled on August 2, 2010
bigsmoke	Rowan Rodrik van der Molen		Extension:Semantic Gallery
bkaempgen	Benedikt Kämpgen		Semantic MediaWiki, Selenium, Maps
blobaugh	Ben Lobaugh	blobaugh	FileRepo refactoring, Azure support
borgo	Alle Borgo		Pywikipediabot stuff
brezelben	Ben Romberg		Intopedia
brion	Brion Vibber	brion	Former Wikimedia Foundation Chief Technical Officer, lead developer, admin access on Bugzilla etc., final say over everything MediaWiki-related, etc., may he live forever. In the distant past, has committed under the name "vibber".
bsitu	Benny Situ	bsitu	Wikimedia Features engineering developer
btongminh	Bryan Tong Minh	Bryan	Miscellaneous API and media related stuff. Pywikipediabot developer.
catrope	Roan Kattouw	RoanKattouw	API lead developer since September 2007, also working on Usability Initiative stuff
cdangerville	Cyril Dangerville		DynamicPageList2 and Intersection extensions
cervidae	Tim Weyer	Tim_Weyer	HelpCommons, ReassignEdits, GlobalUserGroups and some Wikiunity-only extensions
charlie	Charlie Melbye	chuck	SharedUserRights extension
churchofemacs	Tobias	Church_of_emacs	General bug fixes, Extension:FlagPage
ckepper	Christoph Kepper		PediaPress developer, working on Collection
cneubauer	Christian Neubauer	cneubauer	FCKeditor, SpecialUploadLocal
cobi	Jacobi Carter	Cobi	ClueBot
cogden	Chris Ogden		WikiCitation extension
collinj	Jimmy Collins	collinj	German localization updates & misc patches.
conrad	Conrad Irwin	cirwin	Extensions, particularly for Wiktionaries, MetaKeywords extension, Transliterator extension, Extension:CategoryLabel
cosoleto	Francesco Cosoleto
cryptocoryne	Alexander K.	encephallon	AutoProxyBlock extension
cydeweys	Cyde Weys		Pywikipediabot developer.
dale	Michael Dale	mdale	MetavidWiki extension
daniel	Daniel Kinzler	Duesentrieb, Daniel_WMDE	Extension:CategoryTree, ContactPage, Gadgets and various other extensions; Wikimedia Deutschland staff
danny_b	Danny B.	Danny_B	Planet Wikimedia; cs i18n; mostly front-end tweaks; minor patches
dantman	Daniel Friesen	Dantman	Title casing alternate branch; author of C Style Wiki Includes, Description2, MessageCommons, Negref, OpenGraphMeta, ReplaceSet, RudeProxyBlock, SidebarDonateBox, Sudo and WikiCategoryTagCloud extensions
dasch	Daniel Schuba	dasch88	Lots of extensions
david	David McCabe	davidmccabe	Exclusively working on Extension:LiquidThreads
declerambaul	Fabian Kaelin		Editor trends research
demon	Chad Horohoe	^demon	General-purpose developer; author of a few extensions; wears lots of little hats these days
devayon	Devayon Das		Semantic MediaWiki (Summer of Code 2011 student)
devunt	June Hyeon Bae	devunt	LogoFuctions extension; extensions for special wikis
dfinzer	Devin Finzer		Wikimedia Foundation intern working on pending changes data analysis
diebuche	Leo Koppelkamm	diebuche	Core JavaScript
diederik	Diederik van Liere		Contractor working on data dump analysis
djbauch	DJ Bauch		Microsoft SQL Server support
dom	Dominic Arkwright		Worked as a contractor on multilingual MediaWiki back in 2006.
downchuck	Charles Pritchard		Worked on multilingual MediaWiki branch
drtrigon	DrTrigon		Pywikipediabot developer.
dschwen	Daniel Schwen		WikiMiniAtlas extension
edyskant	Erek Dyskant		WMF contractor working on community analytics
eloy	Krzysztof Krzyżaniak		Wikia technical staff; author of the WikiFactory extension and some other Wikia extensions, such as HAWelcome and TaskManager
emil	Emil Podlaszewski	emil^	Wikia technical staff
emiller	Evan Miller		Google Maps extension
emufarmers	Benjamin Lees	Emufarmers	General/easyish bug fixes, extensions
erik	Erik Moeller	Eloquence	Shell. Wikimedia staff member. Former IRC nick Xirzon.
erwin85
evan	Evan Prodromou	EvanProdromou	Runs Wikitravel. Maintains various bits and pieces, including the OpenID extension.
ezachte	Erik Zachte		Working on Wikistats scripts
fabianh	Fabian Howahl		Semantic MediaWiki, Semantic Result Formats
faurethomas	Thomas Fauré	faurethomas	WikiTweet, Categorize, SphinxSearch extensions
fde	Frank Dengler		Semantic Result Formats, other SMW extensions
fenzik	Fenzik Joseph	fenzik	Core and integration with jasperforge.org, forge.openbravo.com & monitoringforge.org.
filnik	Filnik	Filnik	Pywikipediabot developer and botwiki founder.
finlay	Olivier Beaton	finlay	Realnames extension
flohack		Florian	CollaborativeWatchlist extension
flominator			WikiBlame, some extensions
foxtrott	Stephan Gambke		Semantic Forms Inputs extension
fptc	Tobias		FrequentPatternTagCloud extension
freakolowsky	Jure Kajzer	freakolowsky	Oracle support
fredck	Frederico Caldeira Knabben	fredck	Project Manager for FCKeditor, one of the authors of FCKeditor extension
fvassard	Fred Vassard	aZaFred	Former Wikimedia system administrator.
gbruin	Garret Bruin		FBConnect extension
gerardm	Gerard Meijssen	GerardM-	Regression testing software
gerrit	Gerrit Holl
gicode	Rusty Burchfield	gicode	Various extensions (AuthIMAP, AutomaticREMOTE USER) and core functionality as issues come up. Generally bug/security/logging fixes.
gigs	Jason Giglio		Working on GoogleNewsSiteMap
giovanni	Giovanni Luca Ciampaglia	Gciampaglia	Editor trends research
gmaxwell	Greg Maxwell		Creator of many very delicious tools.
gpaumier	Guillaume Paumier	guillom	Wikimedia Foundation staff, maintaining the blogs' skin
grace	Grace Pastorelly Ruiz		Worked as a contractor on multilingual MediaWiki back in 2006.
grafzahl	Alexander		Extension:Score and Extension:JHilbert
greenreaper	Laurence Parry	GreenReaper	Output/page rendering; skins/graphics; extensions (Extension:MediaWikiAuth)
greg	Greg Sabino Mullane	G_SabinoMullane	Exclusively providing support for PostgreSQL
gregchiasson	Greg Chiasson		Extension:ArticleFeedback
gri6507	Paul Grinberg
grondin	Bertrand Grondin	Grondin	Translating MediaWiki. One of the French translation mainteners. Admin on translatewiki.net.
gslater	Grant Slater		Extension:SlippyMap
gszorc	Gregory Szorc		Original author of Farmer extension
gurch	Matthew Britton	gurch	API. Author of the Huggle anti-vandalism tool.
guyvdb	Guy Van den Broeck	guyvdb	Google Summer of Code 2008 student, wrote the Visual Diff feature
guz	Gunther Zehetner		Extension:SemanticQueryFormTool (soon to be renamed to SemanticPropertyTools)
gwicke	Gabriel Wicke		Original author of the MonoBook skin, introduced MediaWiki developer team to Squid. Introduced user scripts and -styles. His CVS commit name was gabrielwicke. Former root. Works on the parser for the visual editor project.
halfak	Aaron Halfaker		Editor trends research
happydog	Mark Clements		CodeReview extension, various other extensions
happy-melon		Happy-melon	Core stuff, DeleteQueue extension etc.
harddisk	Marco Schuster	HardDisk_WP	Author of SMS notifier bot
hartman	Derk-Jan Hartman	thedj	File and media handling
hashar	Ashar Voultoiz	hashar	General-purpose committer.
hcatlin	Hampton Catlin	hcatlin	WebstatsCollector
hhappel	Hans-Joerg Happel		Semantic MediaWiki and related extensions
hippietrail
holek	Mike Połtyn		Extensions, e.g. LiquidThreads
hooft	Rob W.W. Hooft
huji	Hojjat	Hojjat
husky	Hay Kranen		Wikiportrait
ialex	Alexandre Emsenhuber	ialex	Misc. patches and documentation updates; main author of Extension:Configure
ilabarg1	Iker Labarga
inez	Inez Korczyński	Inez	Wikia technical staff, author of AjaxLogin, LinkSuggest and PrivateDomains extensions
ipye	Ian Pye		Extension:WikiTrust
ishidaJ	Noriyuki Ishida		Kyoto University student working on multilingual LiquidThreads
ishimatsu	Masanobu Ishimatsu		Kyoto University student working on multilingual LiquidThreads
ivanlanin	Ivan Lanin		Indonesian localization
j	Jan Gerber		Developer of Firefogg. Will be helping out with some of the open video player & sequencer work with Michael Dale that Kaltura's sponsoring.
jablko	Jack Bates		Extension:WebDAV
jacquesroy7	Jacques Roy		Informix support
jamesur	James Alexander	Jamesofur	Fundraising
jan	Jan Luca		MediaWiki & Poll extension & misc.
janesh			QA engineer for Calcey Technologies, will be committing Selenium tests to /trunk/testing/selenium
janpaul123	Jan Paul Posma		Sentence-level editing
jarnaiz1
jarry1250	Harry Burt	Jarry1250	TranslateSvg extension
jasonr	Jason Richey		Former shell. Used to be Wikia technical staff.
jayvdb			Pywikipediabot stuff
jdlrobson	Jon Robson	jdlrobson	Mobile
jdpond	Jack D. Pond	jdpond	Extension:DiscussionThreading, Extension:NSFileRepo (Namespace protection for files/images), maintaining Image Authorization
jeblad	John Erling Blad		Various extensions
jeluf	Jens Frank	JeLuF	Root access
jeroendedauw	Jeroen De Dauw	JeroenDeDauw	Contractor for WMF and employee for WMDE. Working on Wikidata, Semantic MediaWiki and Education Program
jhb	Joerg Baach	jhb	Contractor who worked on Extension:FlaggedRevs
jhsoby	Jon Harald Søby	Jhs
jimbojw	Jim R. Wilson	jimbojw	Author of various different extensions, including, but not limited to ArticleComments, PagesOnDemand and so on.
jitseniesen	Jitse Niesen		Blahtex extension
jlemley	Jeremy		New Favorites extension
jnatividad	Joel Natividad		Semantic MediaWiki & related extensions
johnduhart	John Du Hart	johnduhart	API, CodeReview, ResourceLoader, and more
jojo	Johannes Beigel		PediaPress python parser & pdf stuff
jonwilliford	Jonathan Williford		Extensions developed for http://neurov.is/on
jpostlethwaite	Jeremy Postlethwaite		Wikimedia Foundation fundraising
jprilusky	Jaime Prilusky		Extension:ContributionCredits and other extensions at Proteopedia
juliano	Juliano F. Ravasi		Wikilog, KML Export, etc.
junaidpv	Junaid P V	Junaidpv	Extension:Narayam
justizin	Justin Ryan		Wikia developer
jvelezv			Worked on (now obsolete) ApiEdit_Vodafone branch
kaldari	Ryan Kaldari		Staff developer for fundraising
karstenuil	Karsten Uil		Wikidata extension
kbrown	Kevin Brown		Summer of Code 2011 student
khorn	Katie Horn	K4-713	Wikimedia Foundation staff
kim	Kim Bruning	kim_bruning, kim_register, kim	Working on OmegaWiki and related projects.
kipcool			OmegaWiki, Wikidata
krafes	Karima Rafes		LinkedWiki
krimpet	Fran McCrory	franny	Lua extension
krinkle	Timo Tijhof	krinkle	General development (mostly Core JavaScript/ResourceLoader).
kroocsiogsi	Nils	Kroocsiogsi	Extension:SoundManager2Button
ktchan	Kwan Ting Chan	KTC	BoardVote extension
kwisatz	David Raison		Extension:QrCode, Extension:GeeQuBox, Extension:SlimboxThumbs
laner	Ryan Lane	Ryan_Lane	Maintainer of the LDAP Authentication plugin.
lcawte	Lewis Cawte	Lcawte	Pywikipediabot
leogregianin	Leonardo Gregianin
leon	Leon Weber	LeonWP
leonsp	Leons Petrazickis	leonsp
lhridley	Lisa Ridley	lhridley	UserPageEditProtection, maintenance of various unmaintained extensions, core documentation
liangent		Liangent	CategoryMultisort extension
lrbabe	Louis Rémi-Babe	lrbabe	Maintainer of the Quiz extension.
luca	Luca de Alfaro		Extension:WikiTrust
lupin
maarten	Maarten van Hoof		Working on Wikidata
macbre	Maciej Brencz		Wikia's CSS and JavaScript guru, author of many delicious extensions (such as IE6PhaseOut and ProblemReports) and contributor to many, many Wikia extensions, such as AjaxLogin, AjaxPoll, EditEnhancements, Follow, ImageLightbox, JSSnippets, MyHome, Oasis, Phalanx, RecipesTemplate, SharedHelp, WikiaPhotoGallery and many more
magnusmanske	Magnus Manske		Original author of MediaWiki.
mah	Mark A. Hershberger	hexmode	Working for Wikimedia Foundation.
maikmerten	Maik Merten	maikmerten	Working on Cortado
malafaya	André Malafaya Baptista		Maintaining some code for Wikidata under extensions/Wikidata
malvineous	Adam Nielsen		Extension:FlvHandler, Extension:MassEditRegex
mark	Mark Bergsma	mark	Root. Wikimedia network manager.
markcdeckert	Mark Deckert		MetaVid work
markj	Mark Jaroski		RdfRedland extension
marooned	Maciej Błaszkowski		Wikia developer, author of SiteWideMessages extension, contributor to many Wikia extensions, such as AjaxPoll, AutomaticWikiAdoption, Blogs, CommunityMessages, EditEnhancements, ImageLightbox, InterwikiDispatcher, MyHome, RandomWiki, Rich Text Editor, ScavengerHunt, SharedHelp, WikiFactory, WhereIsExtension and more
matsuno	Jun Matsuno		Kyoto University student working on multilingual LiquidThreads
matthew.ja	Matthew April		EditGuard Extension, User Merge and Delete extension
mattj	Matt Johnston		MediaWiki core
maxsem	Max Semenik	MaxSem, OuKB	SQLite support
mbrad	Meadowlark Bradsher		Quiz extension
mej	Mark Johnston		Uniwiki extensions
mfarag	Meno25	meno25wiki	Arabic localization updates
mglaser	Markus Glaser		Selenium testing framework, PagedTiffHandler extension
mgrabovsky	Matěj Grabovský	mgrabovsky	General-purpose developer, basic extension
michaeldaly	Michael Daly		ImageMapConversion extension
midom	Domas Mituzas	domas	Root. Database engineer at Facebook; Volunteer Wikimedia data, performance and operations engineer.
mikaellindmark	Mikael Lindmark		ArticleToCategory2 extension
mikeb
misza13	Misza13	Misza	Pywikipediabot developer.
mrbluesky	MrBlueSky		core and extensions enhancements, fixes, unit tests, comments & documentation
mkroetzsch	Markus Krötzsch		Semantic MediaWiki developer
mrzman	Alex Z.	MrZ-man	Core stuff, Wikimedia extensions
mulligen	Erik van Mulligen		Wikidata/OmegaWiki
multichill	Maarten Dammers		Pywikipediabot stuff
nad	Aran Dunkley		Various extensions (i.e. NewUserMessage) and SQLite database backend support
nadeesha	Nadeesha Weerasinghe		New Calcey employee
nagelp	Patrick Nagel	padde	Notificator
neilk	Neil Kandalgaonkar	neilk_	Multimedia, uploading, new editor & parser, editing concurrency, frontend message internationalization, general JS hackery. UploadWizard, jQueryMsg, etc.
nelson	Russ Nelson	nelson	Core MediaStore
nephele			New extensions, improvements to existing extensions
nhuffschmid	Norbert Huffschmid
nicdumz	Nicolas Dumazet	NicDumZ	Pywikipediabot stuff
nick	Nick Sullivan		Formerly a member of Wikia technical staff
nickj	Nick Jenkins		Formerly an active core developer
nikerabbit	Niklas Laxström	Nikerabbit	Internationalisation supremo! Admin of translatewiki.net.
nikola	Nikola Smolenski		Interlanguage extension
nimishg	Nimish Gautam		Developer with Wikimedia Usability Initiative
ning	Ning Hu		Semantic NotifyMe, Semantic Aggregation, Simile extension, Exhibit extension and flv player extension
nobody
nojhan			Maintains French Planet Wikimedia
nord	Elancev Michael	Nordth	ElmEasyRef extension
op_daniel	Daniel Hansch		Ontoprise developer working on Semantic MediaWiki extension
op_freddy	Freddy Pfisterer		Ontoprise developer working on Semantic MediaWiki extension
op_kai	Kai Kühn		Ontoprise developer working on Semantic MediaWiki extension
op_michael	Michael Erdmann		Ontoprise developer working on Semantic MediaWiki extension
op_robert	Robert Ulrich		Ontoprise developer working on Semantic MediaWiki extension
op_thomas	Thomas Schweitzer		Ontoprise developer working on Semantic MediaWiki extension
oren	Oren Bochman		Lucene
otto	Andrew Otto		Wikimedia Foundation worker, data analytics
overlordq	Brent G.	OverlordQ	Extensions, PostgreSQL support, trivial fixes
owen	Owen Davis		Wikia developer, contributor to Wikia's DevBoxPanel and RandomWiki extensions
papyromancer	Andrew Davis		JS2/mwEmbed
pcopp	Paul Copperman	PCopp	Core and extensions
peter17	Peter Potrowl		Google Summer of Code interwiki transclusion project
peterchd	Peter Danenberg		WikiTeX extension updates
petrb	Petr Bena	petan	Huggle developer
pgehres	Peter Gehres		Wikimedia Foundation fundraising
philip	Philip Tzou	Philip_Tzou	Patches for Chinese variant converter
pinky	Nathaniel Herman	Pinky	GlobalUserrights extension, various core patches
pivwan	Pierre-Yves Gillier		Planet Wikimedia updates
planetenxin	Alexander Gesinn		UserAgent extension, plans to maintain existing extensions
platonides		Platonides	Core and extensions
pmwx	Viral Gupta		Purple Numbers extension
preilly	Patrick Reilly	preilly	Mobile
proes	Peter-Jan Roes		Contractor, worked on Wikidata
prolineserver	Holger Motzkau	prolineserver	civiCRM
purodha	Purodha Blissenbach	purodha	Initial version of wap branch, first Kölsch/Ripuarian localisation, also purodha on toolserver, and translatewiki.net, junior pywikipediabot developer.
py	Peter Youngmeister	notpeter	Wikimedia Foundation ops
questpc	Dmitriy Sintsov	QuestPC	Extension:QPoll
quistnix	Anton
raindrift	Ian Baker		WMF employee
rainman	Robert Stojnić	rainman-sr	Works on Extension:Lucene-search. Maintains search servers.
rarohde	Robert Rohde		Extension:Minify, Extension:DelayedDefinition, Extension:FilePageMasking
raylton.sousa	Raylton P. Sousa	Raylton	BookManager extension
raymond	Raimond Spekking	raymond_	Maintainer of the German localization, internationalization of various sorts, fixing bugs and programming things he think they should be useful.
reedy	Sam Reed	Reedy	API engineer, Bugzilla Admin
remco	Remco de Boer		Extensions, especially those in the Semantic Bundle
rememberthedot			General patches and awesomeness
rfong	Roger Fong		Wikinvest stock chart extension
rfrisar
rikwade	Rik Wade
river	River Tarnell		Root, apparently also Bugzilla admin. Mostly maintains non-MediaWiki things like trainwreck. Has been known in the past as "Kate" or "Kate Turner".
rmoen	Rob Moen	rmoen	Wikimedia Features engineering developer
robchurch	Rob Church	robchurch	General-purpose committer, author of many extensions; retired from MediaWiki development in late 2007.
roberthl	Robert Leverington	roberthl	Extension:Babel, Extension:Mibbit, Uniwiki extensions
robin	Robin Pepermans	SPQRobin	WikimediaIncubator extension, i18n, misc.
robla	Rob Lanphier	robla
rodasmith	Rod A. Smith		Wikidata extension
roman	Roman Nosov
rotem	Rotem Liss		Mostly Hebrew localization, RTL languages and Internationalization
rscheiber	Robert Scheiber		General extension cleanup/fixes/etc.
rsterbin	Reha Sterbin		Extension:ArticleFeedback
russblau	Russell Blau	RussBlau	Pywikipediabot development
rvogel	Robert Vogel		a web developer at Hallo Welt! and works on WindowsAzureSDK, WindowsAzureStorage, ClientSyntaxHighlighter, BibManager, and (probably soon) PagedTiffHandler
salvatoreingala	Salvatore Ingala	^Spider^	Google Summer of Code 2011 student
sami	Sami Islam		Collapsmi extension
samuellampa	Samuel Lampa	samuell	RDFIO (Google Summer of Code 2010)
sanbeg	Steve Sanbeg		Extension:Labeled Section Transclusion
santhosh	Santhosh Thottingal	santhosh	WebFonts extension
sanyamgoyal	Sanyam Goyal		Semantic MediaWiki and related extensions
saper	Marcin Cieślak	saper	Commonist, pywikipediabot, possibly core changes such as improved IPv6 support
satoda	Akihiko Satoda		Kyoto University student working on multilingual LiquidThreads
sbachenberg	Simon Bachenberg		Semantic MediaWiki, Solr extension
sburke	Sean Burke		Wikidata extension
sean_colombo	Sean Colombo		Extensions related to Wikia and LyricWiki, possibly some core tweaks
seanheavey	Sean Heavey		Extension:ArticleFeedback: UI designer/front-end developer
sergeychernyshev	Sergey Chernyshev		Runs MediaWikiWidgets.org and a couple other wiki-based sites, developed Widgets, Header Tabs and a few other small extensions, contributes to OpenID, Semantic MediaWiki, Semantic Forms extensions
shakataganai	Jon Davis	ShakataGaNai	Office IT
shimada	Masahiko Shimada		Kyoto University student working on multilingual LiquidThreads
shinjiman	Man Ho	shinjiman	Mostly Chinese localization, Chinese conversion and Planet Wikimedia Chinese
shizhao	Shi Zhao		Chinese Planet Wikimedia maintenance
shmichael	Michael Shynar	shmichael	From Kaltura; doing some add-media-wizard work.
siebrand	Siebrand Mazeland	siebrand	Localisation of core and extensions, minor changes in core. Co-author of Translate extension. Admin of translatewiki.net and bugzilla:.
sillyman
simetrical	Aryeh Gregor	AryehGregor	General-purpose developer
skierpage	S. Page		Extension:Semantic MediaWiki
skizzerz	Ryan Schmidt	Skizzerz	A few extensions, some core stuff
smccandlish	Stanton McCandlish		Cite4Wiki
smoke3723			Sternograph extension
soxred93		[X]	API, unit tests
sql		SQLDb
stipe
strainu	Andrei Cipu	strainu	Romanian Planet Wikimedia maintainer
straussd	David Strauss		Fundraising reporting tools
sumanah	Sumana Harihareswara	sumanah	Community management; Wikimedia Foundation staff
suuch	Paa Kwesi Imbeah		Extension:InstantCommons
svemir	Svemir Brkic		SphinxSearch extension
svip	Svippong	svip	NaturalLanguageList extension, TemplateAdventures extension
swalker	Shawn Walker		Editor trends research
swiftlytilting	Andrew Fitzgerald		MediawikiPlayer, CustomSidebar
synagonism	Kaseluris-Nikos	synagonism	Synagonism skin
tango	Thomas Dalton	Tango42
tbleher	Thomas Bleher	tbleher
than4213	Nathanael Thompson		Planning to rewrite the parser
thedevilonline	Tom Maaswinkel	TheDevilOnLine	Mostly working on the Uniwiki extensions and on translatewiki.net related things
thenub314	Nicholas Longo	thenub314	Extension:Math
thingles	Jamie Thingelstad		Piwik extension
thomasv		ThomasV	Extension:ProofreadPage
tidan	Dan Rinkes		Various special page extensions
tisane	Nathan Larson		RPED extension, possible core branch
tkriplean	Travis Kriplean		Reflect extension
tlaqua	Tim Laqua	TimLaqua	Author of PasswordReset extension
tomasz	Tomasz Finc	tomaszf	Wikimedia staff; also Bugzilla admin
toniher	Toni Hermoso Pulido		Extensions FollowButton, PopUpFile, CheckGroup, ImageRefer
tor	Łukasz Garczewski	TOR_CNR	Wikia-related extensions such as EditSimilar
tosfos	Isaac "Ike" Hecht		AdManager and Semantic MediaWiki work
tparscal	Trevor Parscal	TrevorParscal	Wikimedia staff
travis	Travis Derouin		Managed wikiHow until 17 August 2011.
tstarling	Tim Starling	TimStarling	Paid developer, root access, Bugzilla admin, release manager. Generally viewed as second-in-command. Has Subversion admin access and has sometimes given people commit access.
valhallasw	Merlijn S. van Deen
van-de-bugger	Van de Bugger		SubPageList, Semantic MediaWiki, Semantic Forms, other extensions, and localizing extensions to Russian
varnent	Greg Varnum	varnent	AddThis extension
vvv	Victor Vasiliev	vvv	Core (image moving etc.); also TitleBlacklist, AbuseFilter and CloseWikis extensions
vedmaka	Vedmaka		SocialProfile and Semantic Social Profile
vitalif	Vitaliy		Various extensions, such as DeleteBatch
vrandezo	Denny Vrandecic
vyznev	Ilmari Karonen	vyznev
warddr	Warddr
warx	Artur Jan Fijałkowski	WikiWarX, WarX	Polish Planet Wikimedia
wegge	Anders Wegge Jakobsen	wegge	Danish localisation and other bits and pieces
werdna	Andrew Garrett	Werdna	General-purpose developer; author of Extension:AbuseFilter. Contract software developer at Wikimedia Foundation.
whiteknight	Andrew Whitworth		EmbedVideo and EmbedVideoPlus extensions
whym	Yusuke Matsubara		Editor trends research
wikinaut	Thomas Gries	Wikinaut	General, OpenID, LiquidThreads, email notification
wikipedian	Daniel Herding		Pywikipediabot developer.
wwalc	Wiktor Walc		FCKeditor extension
xqt		xqt	Pywikipediabot developer
yaauie	Ryan Bies	yaauie	HipHop branch, MSSQL support
yar1	Yaron Shapira		Video player, add media wizard, video editor
yaron	Yaron Koren		Extension:Semantic Forms
yonishostak	Yoni Shostak		Extension:ArticleFeedback: project manager
yurik	Yuri Astrakhan	yurik	Original author of MediaWiki's API
YuviPanda	Yuvaraj Pandian	yuvipanda	Summer of Code 2011 student working on offline selection/assessment tools
zak	Zak Greant	zakg	Wikimedia Foundation contractor, working on documentation
zexley	Zack Exley		Wikimedia Foundation staff, analytics work
zhenya	Zhenya Vlasyenko	Zhee	Summer of Code 2011 student working on writing the UserStatus feature for the SocialProfile extension

History

Developers formerly had an important role in the Wikipedia power structure, since they were the only ones able to create sysops or ban users. This has since changed, with the formation of user classes such as bureaucrat and Steward, and the technical capabilities given to these classes.

Some developers had shell access to the California servers, but due to inactivity, weren't given shell access on the "new" Florida servers. Magnus Manske, Nick Reinking, Lee Daniel Crocker, Axel Boldt, Matthias Jordan, Neil Harris and Ed Poor are in this category. Note that Ed Poor was not involved with software development, but instead carried out what are now bureaucratic or sysop tasks, such as promoting sysops and locking accounts. Past MediaWiki software development activity level of developers may be found through CVS statistics.

The following users had CVS access on Sourceforge. From April 2006 to March 2012, Subversion was been used instead. Angela Beesley (expired shell), E23 (snok) (expired shell), Tomasz Wegrzanowski (expired shell and root), Guillaume Blanchard, Axel Boldt, Rowan Collins, T.D. Corell, Lee Daniel Crocker, The Cunctator, Johan Dahlin, Peter Danenberg, Michael Dill, Andrew Dunbar, Emmanuel Engelhart, Andre Engels, Fantasy, Tom Gilder, Gabriel Wicke (expired shell and root), Jan Hidders, Anders Wegge Jakobsen, Matthias Jordan, Shane King, Thomas R. Koll, Niklas Laxström, Christian List, Wil Mahan, Magnus Manske (CVS admin), Zoran Obradovic, Julian Ostrow, Nicholas Pisarro, Jr., Evan Prodromou, Nick Reinking, Derek Ross, Valerio Santinelli, Chris Seaton, Alexander 'Ajvol' Sigachov, Chuck SMITH, Bogdan Stancescu, Marian Steinbach, Tarquin, Timwi (MediaZilla admin), Anders Törlind, Zhengzhu, and Rob Church.

See also

• Commit access
• Development policy
• How to become a MediaWiki hacker

External link

• MediaWiki developer map (dead link)

Other languages: ja:Wikipedia:開発者