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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
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<title>Web Ontology Language OWL / W3C Semantic Web Activity</title>
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</style>
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</head>
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<body>
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<p class="banner"><a href="/2001/sw/" ><img src="/Icons/SW/sw-horz-w3c.png" width="241" height="48" alt="W3C SW Logo"/></a></p>
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<h1>Web Ontology Language (OWL)</h1>
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<p><img src="../../Icons/SW/Buttons/sw-owl-blue" width="80" height="15" alt='OWL Button'/> </p>
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<div class="nav">
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<p><strong>Contents:</strong> <a href="#specs">Specifications</a> | <a
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href="#papers">Articles and Presentations</a> | <a href="#projects">Projects
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and Applications</a> | <a href="#ontologies">Ontologies</a> |</p>
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</div>
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<div class="nav">
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<p><strong>Nearby:</strong> <a href="/2000/01/sw/">Semantic Web Advanced
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Development</a> | <a href="/2001/sw/interest/">SemWeb IG</a> | <a
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href="http://www.w3.org/2003/08/owlfaq.html">OWL FAQ</a> | <a
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href="/RDF/">RDF</a></p>
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</div>
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<p><strong>6 September 2007</strong>: W3C Launches the <a href="/2007/OWL/">OWL Working Group</a>.</p>
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<p>A. OWL is a <em>Web</em> Ontology language. Where earlier languages have
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been used to develop tools and ontologies for specific user communities
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(particularly in the sciences and in company-specific e-commerce
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applications), they were not defined to be compatible with the architecture
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of the World Wide Web in general, and the Semantic Web in particular.</p>
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<p>OWL uses both <a href="/Addressing/">URIs</a> for naming and the
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description framework for the Web provided by <a href="/RDF/">RDF</a> to add
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the following capabilities to ontologies:</p>
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<ul>
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<li>Ability to be distributed across many systems</li>
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<li>Scalability to Web needs</li>
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<li>Compatibility with Web standards for accessibility and
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internationalization</li>
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<li>Openess and extensiblility</li>
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</ul>
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<p>OWL builds on RDF and RDF Schema and adds more vocabulary for describing
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properties and classes: among others, relations between classes (e.g.
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disjointness), cardinality (e.g. "exactly one"), equality, richer typing of
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properties, characteristics of properties (e.g. symmetry), and enumerated
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classes.</p>
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<p>To participate in the development of the next versions of OWL,
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consider joining the <a href="../../2007/OWL/">OWL Working Group</a>.</p>
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<h2 id="specs">OWL Specification Development</h2>
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<p>The OWL suite of specifications consist of:</p>
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<ul>
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<li><cite><a href="/TR/owl-features/" class="title">OWL Web Ontology
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Language Overview</a></cite><br />
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W3C Recommendation <span class="date">10 Feb 2004</span>. Deborah L.
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McGuinness and Frank van Harmelen eds.
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<p>formerly <cite>Feature Synopsis for OWL Lite and OWL</cite></p>
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<blockquote>
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<p>The OWL Web Ontology Language is designed for use by applications
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that need to process the content of information instead of just
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presenting information to humans. OWL facilitates greater machine
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interpretability of Web content than that supported by XML, RDF, and
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RDF Schema (RDF-S) by providing additional vocabulary along with a
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formal semantics. OWL has three increasingly-expressive sublanguages:
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OWL Lite, OWL DL, and OWL Full.</p>
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</blockquote>
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</li>
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<li><cite><a href="/TR/owl-guide/" class="title">OWL Web Ontology Language
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Guide</a></cite>
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<p>W3C Recommendation <span class="date">10 Feb 2004</span>. Smith,
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Welty, McGuinness, eds.</p>
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</li>
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<li><cite><a href="/TR/owl-ref/" class="title">OWL Web Ontology Language
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Reference</a></cite><br />
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<p>W3C Recommendation <span class="date">10 Feb 2004</span>, <span
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class="date">12 November 2002</span>. Dean, Schreiber, eds.</p>
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</li>
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<li><cite><a href="/TR/owl-semantics/" class="title">OWL Web Ontology
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Language Semantics and Abstract Syntax</a></cite>
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<p>W3C Recommendation <span class="date">10 Feb 2004</span>.
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Patel-Schneider, Hayes, Horrocks, eds.</p>
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</li>
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<li><a href="/TR/owl-test/" class="title"><cite>OWL Web Ontology Language
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Test Cases</cite></a><br />
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<p>W3C Recommendation <span class="date">10 Feb 2004</span>. Jeremy J.
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Carroll, Jos De Roo, eds.</p>
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</li>
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<li><a href="http://www.w3.org/TR/webont-req/" class="title"><cite>OWL Web
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Ontology Language Use Cases and Requirements</cite></a><br />
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<p>W3C Recommendation <span class="date">10 Feb 2004</span>. Jeff Heflin,
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ed.</p>
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</li>
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<li><a class="title" href="http://www.w3.org/TR/owl-xmlsyntax/"><cite>OWL
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Web Ontology Language XML Presentation Syntax</cite></a> .
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<p>Masahiro Hori, Jérôme Euzenat, Peter F. Patel-Schneider. W3C
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Note 11 June 2003</p>
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</li>
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</ul>
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<h2 id="tutorials">Tutorials</h2>
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<p><a href="http://www.w3.org/2001/sw/BestPractices/Tutorials">A set of
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tutorials on OWL and related Semantic Web technologies</a> is maintained by
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the <a href="http://www.w3.org/2001/sw/BestPractices/">Semantic Web Best
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Practices and Deployment Working Group.</a></p>
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<h2 id="papers">Articles and Presentations</h2>
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<p>We do not currently keep a separate list of OWL presentations and
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articles. See the <a href="/2001/sw/#events">Semantic Web presentations</a>,
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<a href="/Press/Articles">W3C in The Press</a> and <a
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href="http://www.ilrt.bris.ac.uk/discovery/rdf/resources/#sec-press">Resource
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Description Framework Press</a>.</p>
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<h2 id="projects">Tools, Projects and Applications<a
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id="paa" name="paa"></a></h2>
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<p>The following is a small sample of the growing set of tools, projects and
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applications utilizing OWL.</p>
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<h3 id="demos">Demos / Portals</h3>
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<ul>
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<li><a href="http://www.aifb.uni-karlsruhe.de/about.html">AIFB SEmantic
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PortAL</a> - The Institute AIFB web site of the University of Karlsruhe
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provides annotated pages which contain dynamically generated machine
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processable content in form of OWL annotations.</li>
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<li>The <a href="http://www.aktors.org/akt/">AKT Portal</a> at the
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University of Southampton is largely based on ontologies, and is now
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using OWL.</li>
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<li>The University of Maryland Baltimore County (Finin) has developed two
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demos using OWL ( <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003May/0083.html">Finin
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7May</a>)</li>
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<li><a href="http://www.biopax.org">BioPax</a> - A Data Exchange Format for
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Biological Pathways has been using OWL</li>
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<li>The <a href="/2002/01/tr-automation/">W3C tech reports</a> - related to
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the "multimedia collections" use case</li>
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<li>( <a href="http://www.mindswap.org">The MINDSWAP project web site</a>)
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uses OWL to generate all the web pages and "custom home pages" for
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members of the research group, as well as for doing photo markup. ( <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003May/0054.html">Hendler
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6May</a>)</li>
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<li>The <a
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href="http://owl.mindswap.org/2003/arbitrary/class.shtml?class=http%3A%2F%2Fowl.mindswap.org%2F2003%2Font%2Fowlweb.rdf%23owlComment">OWL-generated
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Comment Status List</a> submitted for the CR request for OWL was
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generated by a combination of OWL tools.</li>
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</ul>
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<p style="font-weight:bold">The listing of developer’s tools on this page has been removed in July 2006, in favor of the <a href="http://esw.w3.org/topic/SemanticWebTools#preview">
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more comprehensive page on the W3C Wiki</a>. By moving this list to the Wiki, the Semantic Web community at large can contribute
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in keeping that information up-to-date.</p>
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<!--
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<h3>Commercial Ontology Support Tools</h3>
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<ul>
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<li><a href="http://www.altova.com/products_semanticworks.html">Altova's
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SemanticWorks</a>
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<blockquote>
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Altova SemanticWorks 2006 is the ground-breaking visual RDF/OWL editor
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from the creators of XMLSpy. Visually design Semantic Web instance
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documents, vocabularies, and ontologies then output them in either
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RDF/XML or N-triples formats. SemanticWorks 2006 makes the job easy
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with tabs for instances, properties, classes, etc., context-sensitive
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entry helpers, and automatic format checking. It is the sensible way to
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put the Semantic Web to work for you.</blockquote>
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</li>
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<li><a href="http://www.alphaworks.ibm.com/tech/semanticstk">IODT</a>, IBM
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Integrated Ontology development toolkit, is a toolkit for ontology
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development. It includes ODM-based RDF/OWL programming APIs,
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Eclipse-based OWL editor and a high performance OWL repository.</li>
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<li><a href="http://www.networkinference.com">Network Inference</a> has
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developed a set of tools around their Cerebra Inference engine that allow
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for the development and use of OWL ontologies.</li>
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<li><a href="http://www.tucanatech.com/">Tucana Technologies Inc.</a> has
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developed a scaleable RDF triple store which includes some OWL
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inferencing and is adding more.</li>
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</ul>
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<h3 id="reasoners">Reasoners</h3>
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<ul>
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<li><a href="http://kaon2.semanticweb.org/">KAON2</a> is a reasoner for OWL
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extended with the DL-safe subset of SWRL; it also provides an OWL
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API.</li>
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<li><a id="fact">FaCT</a> - a DL reasoner. see <a
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href="http://wonderweb.semanticweb.org/index.shtml">WonderWeb
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project</a>, <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Sep/0158.html">Bechhofer
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15 Sep</a>.</li>
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<li><a name="racer" id="racer">Racer</a> - a DL reasoner. see <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Sep/0128.html">Horrocks
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12Sep</a></li>
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<li>Cerebra from <a id="cerebra"
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href="http://www.NetworkInference.com">Network Inference</a> -
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<strong>owl syntax checker</strong>, nearly complete OWL DL <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Sep/0128.html">Horrocks
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12Sep</a></li>
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<li><a href="/2000/10/swap/doc/cwm.html">cwm</a> - useful but incomplete
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OWL Full</li>
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<li><a id="euler">Euler</a> - useful but incomplete OWL Full,see <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Jul/0112.html">De
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Roo 11 Jul</a>: 51 / 234 tests</li>
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<li><a id="surnia" href="http://www.w3.org/2003/08/surnia/">surnia</a> -
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OWL full reasoner based on otter. <a
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href="http://lists.w3.org/Archives/Public/public-webont-comments/2003Aug/0015.html">Hawke
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26Aug</a></li>
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<li><a id="jena" href="http://www.hpl.hp.com/semweb/index.html">Jena/HP</a>
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( <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003May/0068.html">Reynolds/HP
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7 May</a>)will support OWL reasoning.</li>
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<li>Vampire <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Jul/0156.html">Horrocks
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17 Jul</a> - uses a first-order theorem prover to do OWL DL</li>
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<li><a id="pellet"
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href="http://www.mindswap.org/2003/pellet/index.shtml">Pellet</a> is a
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reasoner built in Java that was designed specifically for OWL reasoning.
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<a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Sep/0165.html">Hendler/Sirin/Parsia
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15Sep</a>).</li>
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<li><a href="http://www.swi-prolog.org/packages/semweb.html">SWI-Prolog
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Semantic Web Library</a> contains <i>owl.pl</i> - an OWL reasoning
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package.</li>
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<li><a href="http://www.cs.umbc.edu/~hchen4/fowl">F-OWL</a> is an f-logic
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based Owl tool from UMBC.</li>
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<li><a href="http://mycampus.sadehlab.cs.cmu.edu/tests/">E-wallet</a> is an
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e-commerce and mobile computing tool based on a rule-based OWL
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reasoner.</li>
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</ul>
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<h3 id="parsers">Parsers / Validators</h3>
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<ul>
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<li><a href="http://logic.aifb.uni-karlsruhe.de/dlpconvert/">dlpconvert</a>
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is a tool for the conversion of the Horn fragment of OWL (called DLP)
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from XML or RDF syntax to Prolog syntax.</li>
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<li><a name="owlv" href="http://phoebus.cs.man.ac.uk:9999/OWL/Validator"
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id="owlv">owl species validator/parser</a>. seems to be a conforming
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<strong>owl syntax checker</strong> per <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Sep/0090.html">Bechhofer
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10Sep</a></li>
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<li><a name="OWLP" id="OWLP">OWLP</a> seems to be a conforming <strong>owl
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syntax checker</strong>, per <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003Sep/0176.html">Patel-Schneider
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16Sep</a></li>
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<li><a href="http://www.hpl.hp.com/semweb/index.html">Jena</a>: almost
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conforming ( <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003May/0057.html">Carroll/HP
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6 May</a> )</li>
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<li><a href="http://owl.bbn.com/validator/">BBN OWL Validator</a></li>
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<li><a href="http://owl.mindswap.org/downloads">IC Instance Creator,
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ConvertToRDF, and SMORE</a> use an OWL parser developed at the University
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of Maryland MIND Laboratory.</li>
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</ul>
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<h3 id="editors">Editors</h3>
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<ul>
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<li><a href="http://www.altova.com/products_semanticworks.html">Altova's
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SemanticWorks</a>
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<blockquote>
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Altova SemanticWorks 2006 is the ground-breaking visual RDF/OWL editor
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from the creators of XMLSpy. Visually design Semantic Web instance
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documents, vocabularies, and ontologies then output them in either
|
|
RDF/XML or N-triples formats. SemanticWorks 2006 makes the job easy
|
|
with tabs for instances, properties, classes, etc., context-sensitive
|
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entry helpers, and automatic format checking. It is the sensible way to
|
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put the Semantic Web to work for you.</blockquote>
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</li>
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<li><a href="http://www.topbraidcomposer.com/">Top Quandrant's TopBraid
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Composer</a>
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<blockquote>
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<p>TopBraid is a complete standards-based platform for developing,
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testing and maintaining Semantic Web applications. It offers a
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convenient drag-and-drop, form-based user interface with the ability to
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view and edit ontologies in a variety of serialization formats.
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Testing, consistency checking and debugging is supported by built-in
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OWL Inference engine, SPARQL query engine and Rules engine. TopBraid
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Composer makes it easier for an enterprises to move to Semantic Web
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standards by importing legacy models including XML Schemas, UML, RDB
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Schemas and spreadsheets. Open APIs are available, it can run with the
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database back-end for improve scaleability</p>
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</blockquote>
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</li>
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<li>The <a href="http://protege.stanford.edu/">Protege</a> has developed an
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<a href="http://protege.stanford.edu/plugins/owl/">OWL plugin</a>.</li>
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<li>Construct from <a href="http://www.NetworkInference.com">Network
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Inference</a> <strong>Complete OWL-DL</strong> (<a href="#cw15Jul">White
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15Jul</a>)</li>
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<li><a href="http://www.mindswap.org/~aditkal/editor.shtml">SMORE</a> is a
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markup tool that produces OWL documents</li>
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<li>cwm .n3 -> .rdf produces conforming OWL Full documents</li>
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</ul>
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<h3 id="API">API</h3>
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<ul>
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<li>OWL API ( <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003May/0076.html">bechover/volz
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7 May</a>)</li>
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<li><a href="http://www.hpl.hp.com/semweb/index.html">Jena</a> ( <a
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href="http://lists.w3.org/Archives/Public/www-webont-wg/2003May/0068.html">Reynolds/HP
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7 May</a>)</li>
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<li>Cerebra from <a href="http://www.NetworkInference.com">network
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inference</a></li>
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</ul>
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-->
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<h2 id="ontologies">Ontologies</h2>
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<ul>
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<li><a href="http://www.schemaweb.info/default.aspx">SchemaWeb</a> provides
|
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a comprehensive directory of RDF schemas and OWL ontologies to be browsed
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and searched by human agents and also an extensive set of web services to
|
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be used by agents and reasoning software applications that wish to obtain
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real-time schema information.</li>
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<li><a href="http://www.daml.org/ontologies/">DAML Ontology Library</a>
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which organizes hundreds of ontologies in a variety of different ways
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(keyword, organization, submission date, etc.)</li>
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<li><a href="http://swoogle.umbc.edu/">Swoogle</a> is a search engine for
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Semantic Web documents, including OWL ontologies, built by the University
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of Maryland Baltimore County under funding from the National Science
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Foundation.</li>
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</ul>
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<address class="footer">
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<a href="../People/Ivan/">Ivan Herman</a> <ivan@w3.org>, (W3C)
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Semantic Web Activity Lead<br/>
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$Revision: 1.36 $ of $Date: 2007/10/15 08:05:59 $
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</address>
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</body>
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</html>
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