Alternative browsing, alternatives to accessing Wikipedia through your web browser (mobile devices, desktop integration, alternate portals, etc.)
User scripts, a collection of JavaScript routines that add functionality to Wikipedia pages (e.g., regex search and replace, changing article formatting, and simplifying common tasks)
WatchlistBot is a bot that delivers realtime alerts via instant message (XMPP) when watched articles are edited or when watched users or IP networks edit.
Navigation shortcuts offer the ability to add personal links to the sidebar, providing quick and easy access to favourite articles within Wikipedia.
Finding duplicated references: a tool that will find references with the same URL on a page, with some false positives and missed items, is the URL Extractor For Web Pages and Text. It is not a Wikipedia tool, and there may be other tools available for the purpose. Instructions on its use for Wikipedia are in WP:DUPREF. Such references can often usefully be merged, using <ref name= xxx/> for all except one.
Searching
GlobalWPSearch, search across projects and show missing interlanguage links.
macOS Dashboard Widget (deprecated)
whichsub finds transcluded templates of a given page which contain a given string.
Find Link Tool Find links on Wikipedia. Tool created by Edward Betts.
Wikimedia Global Search, perform Elasticsearch-based searches across the wikitext of all Wikimedia Foundation (WMF) wikis via WMCS Toolforge and Cloud Elastic services. Due to potential for abuse of expensive long-running queries (e.g., DoS attack), SUL login is required.
Insource search is a handy tool that lets you find specific terms or regex patterns across all Wikimedia wikis. It generates a list of pages containing those terms, making it super useful for tasks like AWB/JWB and other search-related activities.
Google tools
Note: Google search results can be several days or even weeks out of date.
Mirrors of Wikimedia content can be filtered from Google search result pages in Firefox using the CustomizeGoogle extension.[1] See meta:Mirror filter for instructions and a filter list.
Google Slides
meta:User:Tbayer (WMF)/Converting Google Slides to wikitext (tutorial)
Google Docs
meta:User:Tbayer (WMF)/Converting Google Docs to wikitext (tutorial + Python script)
Verification
verify Flags text that is potentially incorrect or uncited by comparing the information in the article to the text of its citations.
Wikipedia:Wiki2VCS, script that loads histories onto one's computer, so that they can be quickly diffed and searched
XTools Page History Page statistics and visualization, provides sortable and exportable list of all contributors with number of edits and amount of added text. Provides also results of syntax and grammar checks and latest assessment history.
Finding the responsible user
WikiBlame, searches for given text in versions of article
whoCOLOR, browser script for Grease/Tampermonkey, highlights original authors directly in the article, gets data from a publicly accessible API
XTools Blame, find edits that added the given wikitext
Who Wrote That?, browser extension for Chrome and Firefox, shows editor information for text as a user moves mouse over article text.
User edit counts and analysis
User contribution search, finds all the edits by a user to a single page
Edit summary search, find all the edits by a user such that their edit summary contains the specified string
Wikipedia Page History Statistics Page history statistics by User:aka, builds an edit history overview page
XTools Pages Created – lists all pages created by a user (including deleted ones)
afdstats Analyse AfD !votes against the result
Articles for Creation Review History. This tool shows a list of a user's WP:AfC reviews.
User-level gender statistics for Wikipedia : gender statistics about the list of created articles.
Look at your list of created articles through Wikidata.
Look at your list of created articles with the Xtools Page Prose API
Map your list of created articles through Wikidata.
Wiki streaks, look up a user's edit streak: how many consecutive days they've made an edit
Edit counters
XTools Edit Counter A powerful and full-featured editor analysis tool.
User contributions (Luxo), find contributions on enwiki and other Wikimedia sites
XTools AdminStats Shows statistics of admin actions, broken down into individual actions, arbitrary period selectable
User interaction analysis
Editor Interaction Analyzer compares the edits of two to three specified editors to see which articles overlap, sorted by minimum time between edits by both users. Only works on the English Wikipedia. Speed: slow.
Intersect Contribs, compares the edits of two to eight editors at any WMF wiki to see which articles overlap. Speed: fast.
Intertwined contributions, merges the contributions of two editors at any WMF wiki into a single list. Speed: fast. (Currently not working: error connecting to database.)
Interaction Timeline a chronological history of two users' across pages where they both made edits.
Visualization
Wiki Replay, see m:Grants:IEG/Replay Edits and wm2014:Submissions/Replay Edits for more details.
de:Benutzer:Atlasowa/edit history visualization
Importing (converting) content to Wikipedia (MediaWiki) format
Google Docs Spreadsheet
MediaWiki Table Utility or this updated version This class constructs a MediaWiki-format table from an Excel/GoogleDoc copy&paste. It provides a variety of methods to modify the style. It defaults to a Wikipedia styling with first column header.[2]
Microsoft Office
Word
2007 and later
Microsoft Office Word Add‑in For MediaWiki. For Microsoft Word 2007 or 2010. (Not Supported from Version Word 2013)
Prior versions
For other Macros, see mw:Word macros, Visual Basic macros to use within Microsoft Word to prepare content to be pasted into a Wikipedia page.
wikEd, a full-featured in-browser text editor for Wikipedia edit pages that can convert text and tables pasted from Microsoft Word with a button click
Excel
excel2wiki: Copy & Paste Excel-to-Wiki Converter
tab2wiki: Converts tables (tab-delimited, e.g. copied from Excel) to Wikitext tables
de:Wikipedia:Technik/Text/Basic/EXCEL-Tabellenumwandlung/en: Convert EXCEL-Table with most formatting like background- and fontcolor, fontstyle (bold/italic), columnheight, -width, etc. to Wiki-tableformat
de:Benutzer:Duesentrieb/csv2wp (en) or CSV Converter: Converts many types of spreadsheet tables, including CSV, tab-separated, etc., to MediaWiki or HTML
csv2other: a free open source tool, in .net, to convert CSV and EXCEL files to wiki table format
OpenOffice/LibreOffice
LibreOffice Writer is free. It can open almost any file format. It can export to Mediawiki: File menu > export > save as type > MediaWiki. It will save the file as a .txt file which can be opened with any text editor. Copy the wiki code from the text file. You can save any web page as an HTML file, and then open it in LibreOffice Writer. Edit as needed. Remove the parts you don't want. Keep only tables for example. Then export to MediaWiki. Tables can be further edited in LibreOffice Calc. See: Commons:Convert tables and charts to wiki code or image files. And: Help:Table and the section on spreadsheets and the Visual Editor.
HTML
Html2Wiki is an extension for MediaWiki that imports HTML
Python
Table2wiki.py part of the Pywikipedia bot framework, web port
mw:Alternative parsers - various, including HTML and XML
wikitable2csv - CSV
mw:Extension:TextExtracts - HTML or plain text; without links
meta:User:Tbayer (WMF)/Converting wiki pages to plaintext emails - text
MediaWiki to LaTeX - PDF, EPub, Odt or LaTeX
Wiki Embed Plugin - WordPress
Geotagging-related tools
GeoLocator, Wikipedia compatible geotagging metadata generator and coordinate editor
Gadget developers
Tools for gadget devs:
Wikiblame - use for searching when some function or option was introduced.
Wiki-to-Git - download JS/CSS history to Git which you can then use for gadget development as well as use git blame and other standard development tools.
Wikiploy - use to deploy gadgets to Wikipedia, Meta and other MediaWiki sites.
Global Search - use to check global usage of gadgets, functions etc.
Browser tools:
Firefox DevTools User Docs - JS debugger, CSS editor etc...
Not English, tools that have not yet been translated completely into English. Some need their descriptions translated from German, others are not available in English. Help translate if you can!
Note: Checkinks is buggy use with caution. Consider using instead Internet Archive Bot which can be found in the History tab of any page: "Fix dead links" – login does not require a password.
WikiBiff, To alert users when they have new messages waiting on their talk pages