Web Directory

» Apollo
   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.
   http://apollo.open.ac.uk/index.html

» Distributed Ontology Management Environment
   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.
   http://dome.sourceforge.net/

» Dumpont
   A simple web service allowing to display class and property hierarchies from a DAML or OWL file.
   http://www.daml.org/2001/03/dumpont

» EON2002 - Evaluation of Ontology-based Tools
   Program and Proceedings of OntoWeb-SIG3 Workshop at the 13th International Conference on Knowledge Engineering and Knowledge Management.
   http://km.aifb.uni-karlsruhe.de/eon2002

» F-OWL
   An ontology inference engine for OWL, using Flora-2, an object-oriented knowledge base language and application development platform.
   http://fowl.sourceforge.net/

» IBM Ontology Management System
   A framework for loading ontologies from files and via the Internet and for locally creating, modifying, querying, and storing ontologies.
   http://www.alphaworks.ibm.com/tech/snobase

» OWL Ontology Validator
   An on-line tool that identifies an ontology as OWL Lite, OWL DL, or OWL Full.
   http://phoebus.cs.man.ac.uk:9999/OWL/Validator

» Ontolingua
   A distributed collaborative environment to browse, create, edit, modify, and use ontologies. Provided by the Knowledge Systems Laboratory of Stanford University.
   http://www.ksl.stanford.edu/software/ontolingua/

» Ontology Building: A Survey of Editing Tools
   Survey of ontology editing tools summarizes more than 50 software tools and provides a brief introduction to the topic. Includes resources.
   http://xml.coverpages.org/Denny-OntologyEditorSurveyText20021111.html

» Ontology Works, Inc.
   Makers of ontology engineering tools for enterprise information integration.
   http://www.ontologyworks.com

» Open Cyc
   OpenCyc is the open source version of the Cyc technology, the world's largest and most complete general knowledge base and commonsense reasoning engine.
   http://www.opencyc.org/

» Pellet OWL Reasoner
   An on-line tool providing various reasoning services for OWL documents, such as OWL species, consistency checking, satisfiability, entailment test.
   http://www.mindswap.org/2003/pellet/demo.shtml

» Protégé
   A free open-source Java tool providing an extensible architecture for the creation of customized knowledge-based applications. Includes documentation, events and publications.
   http://protege.stanford.edu/

» RACER System
   A Semantic Web inference engine for developing ontologies and query answering over RDF, RDFS/DAML or OWL.
   http://www.sts.tu-harburg.de/~r.f.moeller/racer/

» The Chimaera Ontology Environment
   A merging and diagnostic ontology environment. It is distributed for external use and has been used in academics and also commercially.
   http://www.ksl.stanford.edu/software/chimaera/

» WordMap Taxonomy Management Software
   Allows an organisation to ensure semantic interoperability of metadata, through consistent terminology in all of its applications, assets and activities.
   http://www.wordmap.com

» pOWL
   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.
   http://powl.sourceforge.net