We have a number of OWL-related tools..

• OilEd. Now includes support for OWL. OilEd will read and render OWL in RDF/XML. Note that as OilEd was originally designed as an OIL/DAML+OIL editor, it is targetted primarily at OWL-DL, and will not necessarily read all OWL files.
• Hoolet. A prototype reasoner based on translation to first order. Provides support for OWL-DL and SWRL.
• FaCT++. A new implementation of the FaCT++ reasoner, with an improved architecture and optimisations.