Ontologies

The Suggested Upper Merged Ontology (SUMO) - Ontology Portal

Reference, Knowledge Management, Knowledge Representation, Ontologies - Open Biological Ontologies. Provides access to controlled vocabularies for shared use across different domains, like MESH and Gene Ontology.

Reference, Knowledge Management, Knowledge Representation, Ontologies - F-OWL. An ontology inference engine for OWL, using Flora-2, an object-oriented knowledge base language and application development platform.

Reference, Knowledge Management, Knowledge Representation, Ontologies - Ontology Works, Inc.. Makers of ontology engineering tools for enterprise information integration.

OpenCyc is the open source version of the Cyc technology, the worlds largest and most complete general knowledge base and commonsense reasonging engine. Cycorp, the builders of Cyc, have set up an independent organization, OpenCyc.org, to disseminate and administer OpenCyc, and have committed to a pipeline through which all current and future Cyc technology will flow into ResearchCyc (available for R&D in academia and industry) and then OpenCyc.

Reference, Knowledge Management, Knowledge Representation, Ontologies - Protégé-2000. A free open-source Java tool providing an extensible architecture for the creation of customized knowledge-based applications.

Reference, Knowledge Management, Knowledge Representation, Ontologies - European Centre for Ontological Research (ECOR). ECOR represents a new approach in applying ontology to a variety of problems in information science and related areas, by coordinating institutions, organisations and companies working in the field.