RDFox
RDFox: A focused RDF platform for teams that need rule-based reasoning and SPARQL. Ranked #21 of 33 in Knowledge Graph Software by our editors (7.1/10); pricing: Pricing on request; best for teams needing fast rule-based RDF reasoning.
At a glance
- Editor score7.1 / 10
- PricingPricing on request
- Best forTeams needing fast rule-based RDF reasoning
- Free planNo
- Semantic reasoningYes
- Founded2017 · Oxford, United Kingdom
- Facts checked21 Sep 2026
Where it wins
- Supports OWL 2, SWRL and Datalog reasoning
- Incremental reasoning with automated materialisation
- Includes REST, Java and graphical web console access
Where it doesn't
- No free plan
- Uses contact-sales pricing
- Not open source
Our verdict on RDFox
RDFox is an in-memory knowledge graph database and semantic reasoning engine from Oxford Semantic Technologies. It is designed for teams managing RDF data, querying with SPARQL 1.1 and deriving new facts from rules and ontological axioms. Its stated use cases include semantic search, recommendations, compliance, configuration management and data integration. Deployment spans Linux, macOS and Windows, with web and API access also available.
Its strongest differentiator is the depth of its reasoning stack. RDFox combines RDF storage with OWL 2 and SWRL ontology support, Datalog rule-based reasoning, incremental reasoning and automated materialisation. It also supports SHACL and imports N-Triples, Turtle, N-Quads, TriG, OWL 2 Functional-Style Syntax and Datalog. This makes it a focused option for organizations that need semantic reasoning rather than a general-purpose graph database. High availability and access control add capabilities relevant to enterprise deployments.
The product connects through REST and Java APIs and includes a graphical web console for querying and exploring graph data. According to the vendor's pricing model, RDFox uses contact-sales pricing and has no free plan, while free access is available through an evaluation or demo request. That approach suits teams assessing a specialized platform for production knowledge graph work, but it is less convenient for buyers who need a self-serve purchase path or an open-source deployment. Choose RDFox when RDF, SPARQL and rule-based inference are central requirements; consider another option when fixed public pricing or open-source licensing matters more.
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RDFox pricing
RDFox fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| Ontology modeling | Yes |
| Semantic reasoning | Yes |
| RDF/SPARQL support | Yes |
| Graph visualization | Yes |
| Import formats | N-Triples, Turtle, N-Quads, TriG, OWL 2 Functional-Style Syntax, Datalog |
| Deployment | Both |
| Query languages | SPARQL 1.1 |
| Deployment | Cloud, Self-hosted, Desktop |
| Platforms | Web, Windows, macOS, Linux |
| Support | Email, Community, Docs |
| Built for | Mid-market, Enterprise (editorial estimate) |
| Integrations | 2 integrations: REST API, Java API |
| Pricing | Pricing on request |
| Website | oxfordsemantic.tech |
| Facts checked | 21 Sep 2026 |
RDFox integrations
RDFox lists 2 integrations on its own site.
- REST API
- Java API
Alternatives to RDFox
- Neo4jA developer-focused property graph with broad tooling, cloud options, and AI-ready search.9.3
- ProtégéA strong free choice for OWL ontology work, with collaboration and reasoning options.9.1
- Progress SemaphoreA mature platform for ontology management, semantic enrichment, and enterprise knowledge graphs.9.0
Also Ranked In
RDFox is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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