IBM Ontology Management System (also known as SNOBASE, for Semantic Network Ontology Base) is a framework for loading ontologies from files and via the Internet and for locally creating, modifying, querying, and storing ontologies.

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IBM Ontology Management System provides a mechanism for querying ontologies and an easy-to-use programming interface for interacting with vocabularies of standard ontology specification languages such as RDF, RDF Schema, DAML+OIL, and OWL. [alphaWorks : Ontology Management System]