The best tool for visualizing ontologies?

Question

I am looking to visualize ontologies for understanding and making others understand. I would prefer to have top-down hierarchy of classes. I have used OntoGraph which comes with Protégé, but I am not happy with the figure :(. I have also used Microsoft Visio and stencils available for Ontology, but that too has not impressed me.

Through this question I would like to know which is the best tool for visualizing an ontology for general purpose, and/or for specific purpose (like writing an academic paper).

Thanks.

~Codera

Solution

I do not have complete answer for your specific problem, but you may try to review the Mike Bergman's list of tools (for ontology visualization).

Note, RDF is a graph, so you may be able to use any graph-visualization software. "Only" need to map RDF to tool-specific model.