Home

Protege is a free, open-source ontology editor that supports the latest OWL 2.0 standard. Protege has a pluggable architecture, and many plugins for different functionalities are available.

To read more about Protege's features, please visit the Protege home page and wiki.

The latest version of Protege can be downloaded from the Protege website, or from github.

The Developer Documentation is included in this wiki.

Looking for support? Please ask questions on the protege-user or protege-dev mailing lists. If you found a bug or would like to request a feature, you may also use this issue tracker.

If you are looking for a Web-based editor, please refer to WebProtege documentation, or try out the hosted server at http://webprotege.stanford.edu.

Protege is released under the BSD 2-clause license.