Features
Graphical RDF editor
Graphical RDFS editor
Graphical OWL editor
Support for OWL Lite, OWL Full & OWL DL dialects
Details window and entry helpers
Printing RDF/OWL diagrams
Tabs for organizing instances, properties, classes, etc.
Syntax and format checking with links to errors
Overview window for navigating large ontologies
Semantics checking for ontologies
Converting between RDF/XML an N-Triples
RDF/XML and N-Triples code generation