RDFox

B tier on Knowledge Graph SoftwareScore 7.3 · #5 of 33

Android app: Not listed
Free plan: Yes
Runs on: api, Linux, Mac, self-hosted, Web, Windows

oxfordsemantic.tech

Summary

RDFox is a main-memory data store for centralized RDF graphs, queried with SPARQL 1.1. It supports rules and ontological axioms represented with Datalog, OWL 2, and SWRL, and updates rule consequences as data changes. The product supports RDF, SPARQL 1.1, Datalog, SWRL, OWL 2 RL, and SHACL. It can be integrated into Java applications through a native API or operated as a standalone server through a REST API. Import and export formats include CSV, JSON, N-Triples, Turtle, TriG, and OWL 2 Functional-Style Syntax. RDFox can replicate knowledge and data changes across multiple servers to maintain service during an outage. Oxford Semantic Technologies describes deployments in cloud, on-premises, on-device, and edge environments; supported operating systems are Linux, macOS, and Windows. RDFox v7.0 added encryption at rest and mutual-TLS client-certificate authentication for endpoint and remote-shell requests. Version 7.1 supports OpenID Connect single sign-on. Pricing is available on request. A 30-day evaluation license is free for evaluation and non-commercial use; commercial use requires a license key.

Who it is for

RDFox may suit teams building RDF knowledge-graph systems that need rule-based reasoning, APIs, or deployment across different environments. Its evaluation license is limited to evaluation and non-commercial use.

What is good

Supports SPARQL 1.1, Datalog, SWRL, OWL 2 RL, and SHACL.
Offers native Java and standalone REST APIs.
Replicates data changes across multiple servers.
Supports Linux, macOS, and Windows.

What to know first

Commercial license pricing is available on request.
Free evaluation license lasts 30 days.
Evaluation license is for non-commercial use only.

Verdict

RDFox combines RDF storage, rule-based reasoning, and multiple deployment and integration options. Teams considering commercial use will need to request pricing and a license key.

RDFox plans and pricing

All plans

RDFox free evaluation license Free 30-day trial · evaluation only · non-commercial use oxfordsemantic.tech · 1 Oct 2026

RDFox commercial license Not published License key required · contact Oxford Semantic Technologies oxfordsemantic.tech · 1 Oct 2026

Compared on knowledge graph software

Free plan: Nooxfordsemantic.tech
Ontology modeling: Yesoxfordsemantic.tech
Semantic reasoning: Yesoxfordsemantic.tech
RDF/SPARQL support: Yesoxfordsemantic.tech
Graph visualization: Yesoxfordsemantic.tech
Import formats: N-Triples, Turtle, N-Quads, TriG, OWL 2 Functional-Style Syntax, Datalogoxfordsemantic.tech
Deployment: bothoxfordsemantic.tech
Query languages: SPARQL 1.1oxfordsemantic.tech

Facts

Product: RDFox is a main-memory, scalable centralized data store for RDF graph data queried with SPARQL 1.1.docs.oxfordsemantic.tech · 1 Oct 2026
Reasoning: It supports rules and ontological axioms represented with Datalog, OWL 2 and SWRL.docs.oxfordsemantic.tech · 1 Oct 2026
Incremental reasoning: RDFox updates rule consequences in real time as data changes and can process 2–3 million new-fact inferences per second.oxfordsemantic.tech · 1 Oct 2026
Knowledge graph standards: Its RDF triple store supports SPARQL 1.1, Datalog, SWRL, OWL 2 RL and SHACL.oxfordsemantic.tech · 1 Oct 2026
APIs: RDFox can be integrated into Java applications through a native API and operated as a standalone server through a RESTful API.docs.oxfordsemantic.tech · 1 Oct 2026
Data exchange: The product imports and exports formats including CSV, JSON, N-Triples, Turtle, TriG and OWL 2 Functional-Style Syntax.oxfordsemantic.tech · 1 Oct 2026
High availability: RDFox can replicate knowledge and data changes across multiple servers for uninterrupted service during an outage.oxfordsemantic.tech · 1 Oct 2026
Supported operating systems: RDFox runs on Linux, macOS and Windows.docs.oxfordsemantic.tech · 1 Oct 2026
Security: RDFox v7.0 added encryption at rest and client-certificate authentication using mutual TLS for endpoint and remote-shell requests.oxfordsemantic.tech · 1 Oct 2026
Single sign-on: RDFox v7.1 supports OpenID Connect single sign-on, including external identity systems such as Microsoft Entra, and encrypted data import/export through Java APIs.oxfordsemantic.tech · 1 Oct 2026
Containers: Official RDFox Docker images are designed to run without superuser capabilities.docs.oxfordsemantic.tech · 1 Oct 2026
Integrations: RDFox was made available on AWS Marketplace through a DataLens partnership with pay-as-you-go deployment and connectors for SQL, CSV, XML, JSON, REST and unstructured data.oxfordsemantic.tech · 1 Oct 2026
Support: Oxford Semantic Technologies says it aims to reply to contact messages within two working days and provides an RDFox Community Slack channel.oxfordsemantic.tech · 1 Oct 2026
Company: Oxford Semantic Technologies is an Oxford University spin-out acquired by Samsung Electronics in 2024.oxfordsemantic.tech · 1 Oct 2026