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Protégé - http://protege.stanford.edu/
A free open-source Java tool providing an extensible architecture for the creation of customized knowledge-based applications. Includes documentation, events and publications. |
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Open Cyc - http://www.opencyc.org
OpenCyc is the open source version of the Cyc technology, the world's largest and most complete general knowledge base and commonsense reasoning engine. |
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OWL Ontology Validator - http://phoebus.cs.man.ac.uk:9999/OWL/Validator
An on-line tool that identifies an ontology as OWL Lite, OWL DL, or OWL Full. |
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Ontolingua - http://www.ksl.stanford.edu/software/ontolingua/
A distributed collaborative environment to browse, create, edit, modify, and use ontologies. Provided by the Knowledge Systems Laboratory of Stanford University. |
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RACER System - http://www.sts.tu-harburg.de/~r.f.moeller/racer/
A Semantic Web inference engine for developing ontologies and query answering over RDF, RDFS/DAML or OWL. |
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The Chimaera Ontology Environment - http://www.ksl.stanford.edu/software/chimaera/
A merging and diagnostic ontology environment. It is distributed for external use and has been used in academics and also commercially. |
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IBM Ontology Management System - http://www.alphaworks.ibm.com/tech/snobase
A framework for loading ontologies from files and via the Internet and for locally creating, modifying, querying, and storing ontologies. |
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http://powl.sourceforge.net - http://powl.sourceforge.net
pOWL is web-based knowledge base edititing and management solution for the Semantic Web. It supports collaborative browsing, querying and editing of RDFS/OWL Ontologies and exposes an API for PHP programmers. |
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WordMap Taxonomy Management Software - http://www.wordmap.com
Allows an organisation to ensure semantic interoperability of metadata, through consistent terminology in all of its applications, assets and activities. |
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Ontology Works, Inc. - http://www.ontologyworks.com
Makers of ontology engineering tools for enterprise information integration. |
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Pellet OWL Reasoner - http://www.mindswap.org/2003/pellet/demo.shtml
An on-line tool providing various reasoning services for OWL documents, such as OWL species, consistency checking, satisfiability, entailment test. |
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EON2002 - Evaluation of Ontology-based Tools - http://km.aifb.uni-karlsruhe.de/eon2002
Program and Proceedings of OntoWeb-SIG3 Workshop at the 13th International Conference on Knowledge Engineering and Knowledge Management. |
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http://fowl.sourceforge.net/ - http://fowl.sourceforge.net/
An ontology inference engine for OWL, using Flora-2, an object-oriented knowledge base language and application development platform. |
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Distributed Ontology Management Environment - http://dome.sourceforge.net/
DOME is developed by the Ontology Management Working Group. The aim is to provide tooling support for editing, browsing, versioning, evolution, mapping and merging of ontologies. |
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http://apollo.open.ac.uk/index.html - http://apollo.open.ac.uk/index.html
A knowledge modelling Java application developed by the Knowledge Media Institute. Internal model is build as a frame system conformant to OKBC protocol. Version 1.1 supports OWL. |