Altova SemanticWorks® 2009 is the ground-breaking visual RDF and OWL editor for the Semantic Web. Graphically design RDF instance documents, RDFS vocabularies, and OWL ontologies, then output them in either RDF/XML or N-Triples formats. SemanticWorks makes the job easy with tabs for instances, properties, classes, etc., context-sensitive entry helpers, automatic format checking, and more.
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