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Protégé pricing

● Identity checked

Research · Vendor site 2026-10-04

Protégé is a free, open-source OWL ontology editor from Stanford used to build and maintain formal knowledge models. The site offers Protégé Desktop for local editing and WebProtégé for collaborative browser-based ontology work, with community support and plug-in extensions.

Updated 2026-10-04View sources
Official website
Category
Research
Free access
Homepage states Protégé is free and open source with downloads for desktop and WebProtégé.
API access
Not confirmed

Understand the total cost

Protégé pricing & plans

Free

Free

Homepage states Protégé is free and open source with downloads for desktop and WebProtégé.

Access
Homepage states Protégé is free and open source with downloads for desktop and WebProtégé.

Price history

No retained pricing changes yet. A current price alone does not establish a historical trend.

How this profile is supported

Facts apply to the named version and check date. Send a sourced correction if something changed.

Protégé pricing questions

Is Protégé free?

Yes. Protégé has an ongoing free plan. Homepage states Protégé is free and open source with downloads for desktop and WebProtégé.

How much does Protégé cost?

Protégé is listed as free. No paid plan with a published price was found.

Does Protégé have an API?

We could not confirm API access for Protégé.