Semantic MediaWiki Plus

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Semantic MediaWiki Plus (SMW+) was a suite of software developed by the Ontoprise corporation, and funded by the Vulcan corporation, that included new extensions (most notably Halo), modified versions of Semantic MediaWiki and related extensions, and a modified version of MediaWiki itself. It was maintained from 2007 to 2012. In April 2012, Ontoprise went bankrupt, and Vulcan ceased their involvement in Semantic MediaWiki. In late 2012, the SMW+ website (which in its last incarnation was smwplus.net) ceased to exist. It appears that SMW+, at least under that name, is a defunct project.

The two SMW+ extensions which seemed to be used most often are ironically two extensions that were only tangentially related to Semantic MediaWiki: WYSIWYG, which provided a WYSIWYG editor, and Access Control List, also known as HaloACL, which provided fine-grained read and write permissioning.

SMW+ also included a Windows installer, which made downloading and maintaining the software on Windows servers easier.

There are currently at least two efforts to revive at least some of the extensions of SMW+:

  • DataWiki, a variation of SMW+ produced by DIQA-PM; DIQA-PM is a company run by some of the former developers of Ontoprise.
  • OntoLTS, a project to create updated, non-proprietary versions of some SMW+ extensions.

Included extensions

The extensions listed in this table were part of SMW+. Note that not all extensions included are shown here.

NameDescriptionShortcutMaintainers
Access Control ListAccess Control List is a powerful extension for protecting single wiki pages, articles in categories or namespaces and values of semantic properties.ACLOntoprise
CollaborationCollaboration extension enables the commenting and rating of wiki articles.CEOntoprise
Data ImportData Import extension enables users to integrate external data into the wiki in two different ways.DIOntoprise
Enhanced RetrievalEnhanced Retrieval is based on 'Solr' and provides a powerful search engine for your wikEROntoprise
Extension:Semantic Gardening (obsolete)Semantic Gardening allows you to detect inconsistencies or peculiarities in your wiki's semantic data via automatic botsSGDOntoprise
HaloProvides an elaborate toolbox to let you gain immediate benefits of semantically enriched, i.e. annotated content.HaloOntoprise
Rich MediaRich Media allows the easy upload and embedding of media files such as documents, images, videos and audio files into the wiki.RMOntoprise
Rule KnowledgeThe Rule Knowledge extension provides a graphical editor for creating logical rulesRKOntoprise
Semantic Gardening (obsolete)Semantic Gardening allows you to detect inconsistencies or peculiarities in your wiki's semantic data via automatic botsSGDOntoprise
TreeViewTreeView displays a hierarchical view of wiki elements of your choice.TVOntoprise
Triple Store ConnectorTriple Store Connector allows to use a triple store as semantic data backend.TSCOntoprise
WYSIWYGThe WYSIWYG extension (based on the FCKeditor) provides a WYSIWYG editor for authoring rich text contents.WYSIWYGOntoprise


This documentation page applies to all SMW versions from 1.1.0 to the most current version.
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Semantic MediaWiki Plus en 1.1.0