List of helpful OWL API Tools

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The OWL API is a Java interface for creating and modifying OWL ontologies, an essential (or, the essential)  component of any OWL tools. Mike Bergman compiled a list of tools that make use of the OWL API, including the popular ontology editor Protégé with its plugins, various OWL reasoners, and software of the more exotic variety: Thirty OWL API Tools – www.mkbergman.com

[Photo by Hans Bernhard (Schnobby) (Own work) [CC-BY-SA-3.0 or GFDL], via Wikimedia Commons]