OWLSharp

OWLSharp is a .NET library built atop RDFSharp with the goal of enabling semantic expressivity for:

• Modeling OWL2 ontologies (with tested Protégé compatibility)
• Exchanging them using standard OWL2 formats (OWL2/XML) and also RDF formats (via RDFSharp)
• Reasoning on them with a set of 25 OWL2 inference rules
• Validating them with a set of 29 OWL2 analysis rules

It also integrates a powerful SWRL engine for modeling, exchange and execution of custom inference rules

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Along with core ontology features, it also includes a set of extensions providing additional capabilities:

• Create and validate schemes describing, documenting and organizing vocabularies of concepts (SKOS)
• Model and correlate features having a spatio-temporal representation (GeoSPARQL, OWL-TIME)