Protégé

Open source

Open-source ontology editor from Stanford for building knowledge models and class hierarchies.

Pricing: free
Free tier: true
License: open-source
Open source: Yes

Editorial review

Protégé has not yet been editorially reviewed. User reviews and published field data below are unaffected — we say so rather than implying an editorial verdict.

Facts & attributes

Every value carries its evidence state. “—” means unknown — never a silent default (P-02).

Identity · Taxonomy

Tags(open-source;cloud-native): ontology editor, OWL, knowledge graph, open sourceVerification pending

Platform · Deployment

Delivery model(SaaS;self-hosted;desktop;mobile;embedded;managed-cloud;appliance): desktop, SaaSVerification pending
Desktop apps(Windows;macOS;Linux): Protégé DesktopVerified

Pricing · Licensing

Free plan(true/false): trueVerification pending
License model(proprietary;open-source;source-available;dual-license): open-sourceVerified
Pricing model(free;subscription;usage;seat;asset;transaction;revenue-share;perpetual;custom): freeVerified

Features · Product · Fit

Core capabilities(authoring;automation;analytics): OWL 2 ontology editing, reasoning and querying, plug-in extensibility (Java), collaborative web-based editing (WebProtégé)Verification pending

Audience · Use · Case

Best for(Neutral editorial summary): Researchers, organizations and governments building OWL 2 ontologies, free and open sourceVerification pending
Company-size fit(individual;SMB;mid-market;enterprise): individual, SMB, mid-market, enterpriseVerification pending
Primary use cases(build;monitor;automate): ontology development, biomedical ontologies and knowledge bases, collaborative ontology buildingVerification pending
Skill level(beginner;intermediate;advanced;specialist): specialistVerification pending

Lifecycle · Versioning

Maintenance status(active;maintenance;deprecated;EOL;archived): activeVerified

Vendor · Maintainer

Vendor type(commercial;foundation;community;government;consortium;individual): communityVerified

Also categorized in

Ontology Management Tools

User reviews

Review policy

No published reviews yet.