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The Semantic Web is the extension of the World Wide Web that enables people to share content beyond the boundaries of applications and websites. It has been described in rather different ways: as a utopic vision, as a web of data, or merely as a natural paradigm shift in our daily use of the Web. Most of all, the Semantic Web has inspired and engaged many people to create innovative semantic technologies and applications. semanticweb.org is the common platform for this community.

You can extend semanticweb.org. Make sure that your favourite semantic tool, event, or ontology is here!

IJCAI2009 (Pasadena, 11 July 2009), ICCS2009 (Moscow, 26 July 2009), VLDB 2009 (Lyon, 24 August 2009), SSMS'09 (Koblenz, 23 August 2009), DEXA 2009 (Linz, 31 August 2009)  view all events …

The following Semantic Web tools have been recently released: Attempto Parsing Engine (Version 6.5-090616, 16 June 2009), SMW+ (Version 1.4.4, 15 June 2009), CubicWeb (Version 3.3.0, 4 June 2009), AceWiki (Version 0.2.13, 28 May 2009), and PoolParty (Version 1.0, 26 May 2009) view all tools …

• Jun 11 2009. UK Government moves to put semantic data on the web.
• Apr 21 2009. The W3C OWL Working Group has published new "Last Call" Working Drafts for OWL 2, a compatible extension of OWL 1. The OWL 2 Overview document provides an overview of the 13 individual documents.
• Feb 05 2009. The CEL reasoner for the OWL 2 profile EL is now available as open source.
• December 02 2008. The OWL Working Group at W3C announces the publication of the "last call" working drafts of the upcoming version 2 of the Web Ontology Language OWL. Comments received by 23 January will be answered and taken into account in the next round of publications.
• August 04 2008. The site has finally been upgraded to use PHP caching resulting in significantly faster page loading times for an improved browsing experience.
• older news …