OWL ontologies are one of the fundamental bricks of the Semantic Web architecture. In spite of this, ontology visualization on a web browser is nowadays not so easy; commercial browsers just show ontologies in plain text, with the OWL code. To avoid this, many ontology developers have implemented, together with their own ontologies, specific web applications to display them. But this can not be the right direction: a common Internet user does not have an easy way to browse an online ontology. Starting from a wide analysis of these applications for ontology visualization, considering their limitations and the last solutions for the development of dynamic web tools, the authors propose a GWT based architecture that, exploiting AJAX technologies, can ease the interfacing of web users with OWL ontologies.
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