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Head-to-head · RDF Databases

Stardog vs RDFox

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Stardog #3 in RDF Databases 9.0/10 Free plan Free plan✓ 0 of 3 features Visit Stardog
RDFox #8 in RDF Databases 8.4/10 Pricing on request ✓ 0 of 3 features Visit RDFox

Stardog leads on 1 check, RDFox on 0, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreStardog · 9.0/10
  • Free planonly Stardog

Stardog scores higher on our rubric for rdf databases: 9.0 against 8.4 out of 10; our editors rank them #3 and #8.

Stardog offers free plan; RDFox doesn't.

Stardog is the better fit for enterprise virtual graphs and data federation. RDFox is the better fit for enterprises needing advanced semantic reasoning.

  • Stardog fits best

    Enterprise virtual graphs and data federation

  • RDFox fits best

    Enterprises needing advanced semantic reasoning

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Stardog 9.0/10 Visit ↗ RDFox 8.4/10 Visit ↗
At a glance
Editor score 9.0 8.4
Ranking #3 in RDF Databases #8 in RDF Databases
Best for Enterprise virtual graphs and data federation Enterprises needing advanced semantic reasoning
Pricing model Free plan + paid Paid
Starting price — Pricing on request
Free plan ✓ (best) —
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted, Desktop
Platforms Web Web, Windows, macOS, Linux
Support Community, Docs · 24/7 Email, Community, Docs
Integrations 20 integrations 2 integrations
Built for Mid-market, Enterprise Mid-market, Enterprise
Features Stardog 0/3 · RDFox 0/3
Reasoning support Not checked yet Not checked yet
RDF-star support Not checked yet Not checked yet
Federated queries Not checked yet Not checked yet
Specs
Deployment options Not checked yet Not checked yet
SPARQL support Not checked yet Not checked yet
Supported RDF formats Not checked yet Not checked yet
Our review
Pros
  • Virtual graphs query remote relational, NoSQL, file, and SPARQL sources
  • Federation, inference, ontology management, caching, and scheduled triggers
  • Cloud and self-managed deployment with SQL, REST, GraphQL, and CLI access
  • Supports SPARQL 1.1, OWL 2, SWRL and Datalog reasoning.
  • Incremental reasoning can materialize derived facts automatically.
  • Offers REST and Java APIs, a web console and high availability.
Cons
  • The Free plan is limited to 1 million stored edges
  • Free uses shared cloud hosting and includes community support
  • Enterprise pricing is contact-sales only
  • No free plan; access to pricing requires contacting sales.
  • Its semantic reasoning focus may exceed simpler RDF storage needs.
  • Deployment and API options may require technical setup.
Our verdict

Stardog is a knowledge-graph and semantic AI platform for enterprises that need to connect and query distributed data. Its virtual graphs can work across relational, NoSQL, file, cloud, and SPARQL sources without necessarily moving that…

Read the review →

RDFox is an in-memory knowledge graph database and semantic reasoning engine from Oxford Semantic Technologies. It stores RDF data, supports SPARQL 1.1 queries, and derives facts from rules and ontological axioms. The product is aimed at…

Read the review →
  1. StardogRDF Databases 9.0Free plan
  2. RDFoxRDF Databases 8.4Pricing on request

Strengths and trade-offs

  • Stardog — where it wins

    • Virtual graphs query remote relational, NoSQL, file, and SPARQL sources
    • Federation, inference, ontology management, caching, and scheduled triggers
    • Cloud and self-managed deployment with SQL, REST, GraphQL, and CLI access

    Where it doesn't

    • The Free plan is limited to 1 million stored edges
    • Free uses shared cloud hosting and includes community support
    • Enterprise pricing is contact-sales only

  • RDFox — where it wins

    • Supports SPARQL 1.1, OWL 2, SWRL and Datalog reasoning.
    • Incremental reasoning can materialize derived facts automatically.
    • Offers REST and Java APIs, a web console and high availability.

    Where it doesn't

    • No free plan; access to pricing requires contacting sales.
    • Its semantic reasoning focus may exceed simpler RDF storage needs.
    • Deployment and API options may require technical setup.
  • Stardog9.0/10 · Free plan

    A broad enterprise platform for federated queries, virtual graphs, and semantic reasoning.

    Visit StardogFull verdict →
  • RDFox8.4/10 · Pricing on request

    RDFox combines SPARQL querying with rule-based and ontology-driven reasoning for RDF data.

    Visit RDFoxFull verdict →

More comparisons

All RDF databases comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update