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Name of the tool: Protégé
Home page:
Date of latest release:
Programming language(s) that can be used with the tool:
Relevant semantic web technologies: OWL, RDFS, RDF
Categories: Editor, Development Environment, Validator, Visualizer
See also:égé
Public mailing list:
Preferred project URI:
DOAP reference:
Company or institution: Stanford University

(Tool description last modified on 2009-12-18.)


Protégé is a free, open source ontology editor and knowledge-base framework.

The Protégé platform supports two main ways of modeling ontologies via the Protégé-Frames and Protégé-OWL editors. Protégé ontologies can be exported into a variety of formats including RDF, RDFS, OWL, and XML Schema. (more)

Protégé is based on Java, is extensible, and provides a plug-and-play environment that makes it a flexible base for rapid prototyping and application development. Examples are a visual editor for OWL (called OWLViz), storage back-ends to Jena and Sesame, as well as an OWL-S plugin, which provides some specialized capabilities for editing OWL-S descriptions of Web services.