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build/release Move build/travis to tests/travis
docs Add CompositePropertyTableDiffIterator
i18n Localisation updates from
includes Tidy
languages Fix coding style issues #899
maintenance rebuildData / Add `--skip-properties` / remove marked for deletion first
resources Distinguish display of a "normal" link and a suboject
src Fix access to unstubbed $wgLang in HookRegistry, refs 1123
tests MW 1.26 / DatabaseBase::ignoreErrors was made protected
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.jshintignore Move some resource files
.jshintrc Improve smw constructor
.scrutinizer.yml Add RequestOptionsProcessor
.travis.yml Move build/travis to tests/travis
SemanticMediaWiki.settings.php Add feature flags to CachedValueLookupStore, refs 1035, 1063
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phpcs.xml Max line lenght 140 -> 180
phpmd.xml Add PHPCS and PHPMD support

Semantic MediaWiki

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Semantic MediaWiki (a.k.a. SMW) is a free, open-source extension to MediaWiki – the wiki software that powers Wikipedia – that lets you store and query data within the wiki's pages.

Semantic MediaWiki is also a full-fledged framework, in conjunction with many spinoff extensions, that can turn a wiki into a powerful and flexible knowledge management system. All data created within SMW can easily be published via the Semantic Web, allowing other systems to use this data seamlessly.

For a better understanding of how SMW works, have a look at Semantic MediaWiki deployed in 5 min, using a Sesame or Fuseki triplestore, or browse the for a more comprehensive introduction.


  • PHP 5.3.2 or later
  • MediaWiki 1.19 or later
  • MySQL 5+, SQLite 3+ or PostgreSQL 9.x

A list of supported PHP versions, MediaWiki versions and databases per SMW release can be found in the compatibility matrix.


The easiest way to install Semantic MediaWiki is by using Composer. It is recommended to read the installation instructions together with the available upgrade guide.

    "require": {
        "mediawiki/semantic-media-wiki": "~2.3@dev"


Most of the documentation can be found on the SMW wiki. A small core of documentation also comes bundled with the software itself. This documentation is minimalistic and less explanatory then what can be found on the SMW wiki. It is however always kept up to date, and applies to the version of the code it comes bundled with. The most important files are linked below.

Contribution and support

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Many people have contributed to SMW. A list of people who have made contributions in the past can be found here or on the SMW wiki. The overview on how to contribute provides information on the different ways available to do so.

If you have remarks, questions, or suggestions, please send them to You can subscribe to this list here.

If you want to contribute work to the project please subscribe to the developers mailing list and have a look at the contribution guideline.


This extension provides unit and integration tests that are normally run by a continues integration platform but can also be executed manually. A more comprehensive introduction can be found in the test section.


GNU General Public License, version 2 or later. The COPYING file explains SMW's copyright and license.

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