Tech riderRev. 30 Sept 2026
- 1Runs onLinux, Mac, Web, Windows
- 2CostsFree plan
- 3Ontology modelingYes
- 4Semantic reasoningYes
- 5RDF/SPARQL supportYes
- 6Graph visualizationYes
- 7Import formatsRDF/XML, Turtle, OWL/XML, OBO
- 8Deploymentboth
8 lines stated Written from the maker's own pages: protege.stanford.edu

Overview
Protégé is ranked #8 of 33 in knowledge graph software on Specifiction. It runs on Linux, macOS, Web, Windows. There is a free plan.
Protégé plans and pricing
All plansProtégé Desktop and WebProtégé Free Free and open source · OWL 2 support protege.stanford.edu · 30 Sept 2026
Compared on knowledge graph software
- Free plan
- Yesprotege.stanford.edu
- Ontology modeling
- Yesprotege.stanford.edu
- Semantic reasoning
- Yesprotege.stanford.edu
- RDF/SPARQL support
- Yesprotege.stanford.edu
- Graph visualization
- Yesprotege.stanford.edu
- Import formats
- RDF/XML, Turtle, OWL/XML, OBOprotege.stanford.edu
- Deployment
- bothprotege.stanford.edu
- Query languages
- SPARQLprotege.stanford.edu
Facts
- Purpose
- Protégé is an ontology editor used to build and manage ontologies.protege.stanford.edu · 30 Sept 2026
- Editions
- Protégé is available as the desktop application Protégé Desktop and the browser based editor WebProtégé.protege.stanford.edu · 30 Sept 2026
- OWL support
- Both editions support the OWL 2 Web Ontology Language.protege.stanford.edu · 30 Sept 2026
- Collaboration
- WebProtégé supports collaborative viewing and editing of OWL 2 ontologies, with sharing, permissions, threaded discussions, watches, email notifications, and revision history.protege.stanford.edu · 30 Sept 2026
- File formats
- WebProtégé ontologies can be uploaded and downloaded in RDF/XML, Turtle, OWL/XML, OBO, and other formats.protege.stanford.edu · 30 Sept 2026
- Desktop reasoning
- Protégé Desktop connects directly to description logic reasoners including HermiT and Pellet.protege.stanford.edu · 30 Sept 2026
- Desktop tools
- Protégé Desktop supports multiple ontologies in one workspace, ontology structure visualization, inference explanations, and refactoring operations.protege.stanford.edu · 30 Sept 2026
- Extensibility
- Protégé Desktop is written in Java and uses a plug-in architecture for extensions.protege.stanford.edu · 30 Sept 2026
- Cross compatibility
- WebProtégé and Protégé Desktop are described as cross compatible with each other.protege.stanford.edu · 30 Sept 2026
- Users
- The project says it is used by researchers, organisations, and governments worldwide.protege.stanford.edu · 30 Sept 2026
- Support
- Free support is offered through mailing lists monitored by team members and experienced community users, and users must subscribe before posting.protege.stanford.edu · 30 Sept 2026
- Documentation
- Protégé documentation includes FAQs, tutorials, user guides, and developer documentation.protege.stanford.edu · 30 Sept 2026
- Maintainer
- Protégé Desktop is community maintained, with Damien Goutte-Gattat identified as its current primary maintainer.protege.stanford.edu · 30 Sept 2026
- Origin
- Protégé was developed by the Stanford Division of Computational Medicine at Stanford University School of Medicine.protege.stanford.edu · 30 Sept 2026
Best Protégé alternatives
See all 20 All accessCh 01 RDFox Free planFree trialAPI Free to start7.9 All accessCh 02 AllegroGraph Free planAPILinux Free to start7.5 All accessCh 03 GraphDB Free planAPILinux Free to start7.5 All accessCh 04 RDF Studio Free planAPILinux Free to start7.5 All accessCh 05 Stardog Free planAPILinux Free to start7.4 All accessCh 06 TypeDB Free planAPILinux from $0.07/mo7.4
Where it ranks on Specifiction
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Sources
- protege.stanford.edu· checked 30 Sept 2026
- protege.stanford.edu/software/· checked 30 Sept 2026
- protege.stanford.edu/support/· checked 30 Sept 2026
- protege.stanford.edu/about/· checked 30 Sept 2026




