Clark & Parsia.

Clark & Parsia, LLC, is a small R&D firm—specializing in Semantic Web and advanced systems—based in Washington, DC, with government and commercial customers in health care & life sciences, aerospace, financial services, oil & gas, IT, and defense industries.

We're experts in a range of advanced technologies: all aspects of Semantic Web and Semantic Web Services, including OWL, description and other logics, RDF, reasoning at scale, ontology development, automated planning, policy management and analysis, machine learning and data mining, etc. We also have extensive experience with standards-body work related to the Semantic Web, including OWL, OWL2, SPARQL, WSDL, etc.—which means that we're able to influence standards work on behalf of our customer's technology interests.

We offer commercial support for Pellet, a best-of-breed Open Source OWL DL reasoner in Java, and related systems.

We're building up a portfolio of infrastructure technologies in the semantic space, including:

• Pellet, the best-of-breed OWL DL reasoner
• Owlgres, a scalable OWL reasoner for large, database-like applications
• JSpace, a Linked Data Browser in Java
• OwlSight, a Web 2.0, in-browser ontology browser/editor app
• Pronto, a probabilistic reasoner for OWL applications
• XACML-DL, an OWL-based XACML policy analysis tool
• HTN-DL Planner, an HTN-based planner system integrated with Pellet for automated planning applications

We offer OEM licenses for our customers who are building horizontal and vertical apps using our semantic infrastructure technology.