Best RDF Databases in 2026
Updated
In short: RDFox is ranked #1 of 26 as of 4 October 2026, ahead of Tentris and Fluree DB. The best-ranked option with a free plan is Tentris.
RDF databases can be compared by how they handle the formats, queries, and reasoning your data work requires. Look at supported RDF formats and SPARQL support, then weigh federated queries, reasoning support, and RDF-star support against your intended workload. Deployment options help frame infrastructure fit, while free-plan availability and paid-from pricing provide cost details to consider. RDFox, Tentris, and Fluree DB are among the entries, as are GraphDB and Stardog. Use these criteria to identify the capabilities that matter for your application and deployment environment, rather than assuming every database will suit the same RDF use case.
26 RDF databases ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
26ranked
11free plans on this page
4 Oct 2026last checked
Input list RDF Databases 25 channels on this page · 103 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromDeployment optionsSPARQL supportReasoning supportRDF-star supportFederated queriesSupported RDF formats Spec sheet Score
01 RDFox Free planNoPaid fromnot statedDeployment optionsnot statedSPARQL supportnot statedReasoning supportnot statedRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsnot stated 1/8spec lines stated 7.8
02 Tentris Free planYesPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportNoRDF-star supportnot statedFederated queriesYesSupported RDF formatsN-Triples, Turtle, N-Quads, TriG, RDF/XML 6/8spec lines stated 7.7
03 Fluree DB Free planYesPaid fromnot statedDeployment optionsnot statedSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportYesFederated queriesYesSupported RDF formatsJSON-LD, Turtle, N-Triples, N-Quads, TriG 6/8spec lines stated 7.6
04 GraphDB Free planYesPaid fromnot statedDeployment optionshybridSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportYesFederated queriesYesSupported RDF formatsTurtle, Turtle-star, TriG, TriG-star, N3, N-Triples, N-Quads, JSON-LD, NDJSON-LD, RDF/JSON, RDF/XML, TriX, BinaryRDF 7/8spec lines stated 7.6
05 Stardog Free planYesPaid fromnot statedDeployment optionsnot statedSPARQL supportnot statedReasoning supportnot statedRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsnot stated 1/8spec lines stated 7.4
06 Virtuoso Universal Server Free plannot statedPaid fromnot statedDeployment optionsnot statedSPARQL supportnot statedReasoning supportnot statedRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsnot stated 0/8spec lines stated 7.4
07 Apache Jena Fuseki Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportYesFederated queriesYesSupported RDF formatsTurtle, TriG, N-Triples, N-Quads, JSON-LD 6/8spec lines stated 7.3
08 Eclipse RDF4J Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.2Reasoning supportYesRDF-star supportYesFederated queriesYesSupported RDF formatsRDF/XML, Turtle, N-Triples, N-Quads, JSON-LD, TriG, TriX 6/8spec lines stated 7.3
09 Corese Free planYesPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportYesFederated queriesYesSupported RDF formatsRDF/XML, Turtle, TriG, JSON-LD, N-Triples, N-Quads, RDFa 7/8spec lines stated 7.2
10 AllegroGraph Free planYesPaid fromnot statedDeployment optionsnot statedSPARQL supportnot statedReasoning supportnot statedRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsnot stated 1/8spec lines stated 7.0
11 Dydra Free planYesPaid fromnot statedDeployment optionscloudSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportnot statedFederated queriesYesSupported RDF formatsRDFa, RDF/JSON, N-Quads, N-Triples, RDF/XML, TriG, Turtle 6/8spec lines stated 7.0
12 qEndpoint Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportnot statedRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsRDF/XML, Turtle, N-Triples, N-Quads, JSON-LD, TriG, TriX 3/8spec lines stated 7.0
13 TriplyDB Free planYesPaid fromnot statedDeployment optionshybridSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsJSON-LD, N-Quads, N-Triples, RDF/XML, TriG, Turtle 5/8spec lines stated 6.7
14 BrightstarDB Free planYesPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportnot statedRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsN-Triples, N-Quads, RDF/XML, Turtle, RDF/JSON, N3, TriX 4/8spec lines stated 6.4
15 QLever Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportnot statedRDF-star supportnot statedFederated queriesYesSupported RDF formatsTurtle (TTL), N-Triples (NT), N-Quads (NQ) 4/8spec lines stated 6.3
16 Mulgara Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportnot statedReasoning supportYesRDF-star supportnot statedFederated queriesYesSupported RDF formatsRDF/XML, N-Triples, N3 4/8spec lines stated 6.2
17 eccenca Corporate Memory Free plannot statedPaid fromnot statedDeployment optionshybridSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsRDF/XML, N-Triples, N-Quads, Turtle, TriG, JSON-LD, RDF/JSON 4/8spec lines stated 6.1
18 Halyard Free plannot statedPaid fromnot statedDeployment optionshybridSPARQL supportsparql 1.1Reasoning supportnot statedRDF-star supportnot statedFederated queriesYesSupported RDF formatsN-Triples, RDF/XML, Turtle, N3, RDF/JSON, TriG, N-Quads, BinaryRDF, TriX, JSON-LD 4/8spec lines stated 6.1
19 Strabon Free planYesPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsnot stated 4/8spec lines stated 5.9
20 gStore Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportYesRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsN-Triples, Turtle, TriG, RDF/XML, RDFa, JSON-LD 4/8spec lines stated 5.8
21 Parliament Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportnot statedReasoning supportYesRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsnot stated 2/8spec lines stated 5.8
22 Apache Rya Free planYesPaid fromnot statedDeployment optionshybridSPARQL supportnot statedReasoning supportYesRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsRDF/XML, N-Triples, Turtle, N3, TriX, TriG 4/8spec lines stated 5.7
23 Quadstore Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportnot statedRDF-star supportNoFederated queriesnot statedSupported RDF formatsTurtle 4/8spec lines stated 5.7
24 RedStore Free planYesPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.1Reasoning supportnot statedRDF-star supportnot statedFederated queriesnot statedSupported RDF formatsTurtle 4/8spec lines stated 5.7
25 sparq Free plannot statedPaid fromnot statedDeployment optionsself-hostedSPARQL supportsparql 1.2Reasoning supportYesRDF-star supportYesFederated queriesYesSupported RDF formatsTurtle, N-Triples, N-Quads, TriG, JSON-LD, RDF/XML 6/8spec lines stated 5.7
Is your tool on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which RDF database is ranked first on Specifiction?
RDFox is ranked #1 of 26 with a score of 7.8. Tentris is second and Fluree DB third.
How many of these have a free plan?
11 of the 25 on this page publish a free plan on their own pricing pages.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing. Paid placements never change a rank.
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