== General ==
- [https://gerrit.wikimedia.org/ Wikimedia Code Review] - Gerrit, our code review tool and Git repository
- [https://www.mediawiki.org/wiki/Gerrit/Getting_started Getting started with Git/Gerrit] - Get up and running on Git, Gerrit & Wikimedia Labs
- [https://meta.wikimedia.org/wiki/Research:Data Data hub] - freely-available datasets to play with
- [https://analytics.wikimedia.org Wikimedia Analytics] - traffic analytics
== Events ==
- [https://www.mediawiki.org/wiki/Architecture_meetings Weekly Technical Committee Discussions] - [https://www.mediawiki.org/wiki/Wikimedia_Technical_Committee Technical committee] holds weekly meetings, minutes are public
- [https://www.mediawiki.org/wiki/Wikimedia_Developer_Summit/2018 Wikimedia Developer Summit] (Jan 22-23 2018, San Francisco)
- [https://www.mediawiki.org/wiki/Wikimedia_Hackathon_2018 Wikimedia Hackathon 2018] (May 18-20 2018, Barcelona)
- [https://wikimania2018.wikimedia.org/wiki/Wikimania Wikimania 2018] (July 18-22, 2018, Cape Town)
== Templates/Scripts ==
- [https://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual Lua reference manual - using Lua inside MediaWiki templates]
- [https://www.mediawiki.org/wiki/Gadget_kitchen Gadget kitchen] - easy intro to writing JS gadgets
- [https://en.wikipedia.org/wiki/Wikipedia:User_scripts Wikipedia User Scripts] - English Wikipedia's very active and rich community page for organizing work on user scripts
== Tools/Bots ==
- [https://wikitech.wikimedia.org/wiki/Help:Toolforge Toolforge] (formerly Tool Labs) - environment for running tools, bots, web services
- [https://www.mediawiki.org/wiki/ORES ORES] (Objective Revision Evaluation Service) - web service and API that provides machine learning as a service for Wikimedia projects
- [https://www.mediawiki.org/wiki/Manual:Pywikibot Pywikibot], for writing bots in Python (optimized for Wikimedia wikis)
- [https://www.mediawiki.org/wiki/API:Main_page MediaWiki API docs]
- [https://www.mediawiki.org/wiki/Special:ApiSandbox API sandbox on MediaWiki.org] - the sandbox is installed on all Wikimedia wikis
- [https://commons.wikimedia.org/wiki/Special:ApiSandbox#action=query&prop=imageinfo&format=json&iiprop=extmetadata&iilimit=10&titles=File%3ACommon%20Kingfisher%20Alcedo%20atthis.jpg API sandbox example: load metadata for an image on Wikimedia Commons]
== MediaWiki ==
- [https://www.mediawiki.org/wiki/MediaWiki-Vagrant MediaWiki Vagrant]
- [https://www.mediawiki.org/wiki/How_to_contribute How to contribute to MediaWiki]
- [https://www.mediawiki.org/wiki/VisualEditor VisualEditor] - MediaWiki's rich-text editor
- [https://www.mediawiki.org/wiki/Mobile Mobile] - Mobile projects, including apps
- [https://www.mediawiki.org/wiki/Category:Extensions MediaWiki extensions] - including many third-party ones
- [https://www.mediawiki.org/wiki/Parsoid Parsoid] - new service for parsing wikitext to an [https://www.mediawiki.org/wiki/Parsoid/MediaWiki_DOM_spec equivalent HTML/RDFa document model]
== Infrastructure ==
- [https://noc.wikimedia.org/ Wikimedia NOC] - links to Ganglia, config files, logs, and more
- [https://git.wikimedia.org/tree/operations%2Fpuppet.git Wikimedia's main Puppet repository]
- [http://wikitech.wikimedia.org/view/Presentations Tech presentations, including infrastructure-focused ones]
- [https://grafana.wikimedia.org/ Grafana] (Dashboards)
- [https://performance.wikimedia.org/ Site Performance]