Best RDF Databases in 2026
Updated
In short: GraphDB is ranked #1 of 25 as of 3 October 2026, ahead of AllegroGraph and Stardog. The best-ranked option with a free plan is AllegroGraph.
RDF databases are built for storing and querying data represented as connected facts, so the right fit depends on the formats and query patterns your stack needs. Compared on deployment options, federated queries, free plan, paid from, RDF-star support, reasoning support, SPARQL support, and supported RDF formats, the entries give you several angles for evaluating that fit. GraphDB and AllegroGraph lead the opening group, alongside Stardog, Fluree DB, Eclipse RDF4J, Apache Jena Fuseki, RDFox, and Corese. Check which options support the RDF formats you use, then weigh query federation and reasoning against deployment and cost considerations.
25 RDF databases ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Deployment options | |
|---|---|---|---|---|---|---|---|---|
| 1 | GraphDB | 8.9 | RecognisedAPIDocumented | Free | Yes | — | hybrid | View |
| 2 | AllegroGraph | 8.7 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 3 | Stardog | 8.7 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 4 | Fluree DB | 8.7 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 5 |  Eclipse RDF4J | 8.6 | RecognisedAPIDocumented | Free | — | — | self-hosted | View |
| 6 |  Apache Jena Fuseki | 8.5 | RecognisedAPIDocumented | Free | — | — | self-hosted | View |
| 7 | RDFox | 8.4 | RecognisedAPIDocumented | Free | No | — | — | View |
| 8 |  Corese | 8.3 | RecognisedAPIDocumented | — | Yes | — | self-hosted | View |
| 9 |  Dydra | 7.6 | RecognisedAPIDocumented | Free | Yes | — | cloud | View |
| 10 |  Tentris | 6.7 | RecognisedAPIDocumented | Free | Yes | — | self-hosted | View |
| 11 |  TriplyDB | 6.2 | RecognisedAPIDocumented | — | Yes | — | hybrid | View |
| 12 |  QLever | 6.1 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
| 13 | eccenca Corporate Memory | 6.1 | RecognisedAPIDocumented | — | — | — | hybrid | View |
| 14 |  sparq | 5.9 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
| 15 |  Apache Rya | 5.8 | RecognisedAPIDocumented | — | Yes | — | hybrid | View |
| 16 |  Halyard | 5.6 | RecognisedAPIDocumented | — | — | — | hybrid | View |
| 17 |  qEndpoint | 5.5 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
| 18 |  gStore | 5.5 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
| 19 |  BrightstarDB | 5.5 | RecognisedAPIDocumented | — | Yes | — | self-hosted | View |
| 20 |  Strabon | 5.5 | RecognisedAPIDocumented | — | Yes | — | self-hosted | View |
| 21 |  Mulgara | 5.2 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
| 22 |  RedStore | 5.1 | RecognisedAPIDocumented | — | Yes | — | self-hosted | View |
| 23 |  Trigo | 4.9 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
| 24 |  Quadstore | 4.9 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
| 25 |  Parliament | 4.8 | RecognisedAPIDocumented | — | — | — | self-hosted | View |
Is your platform 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 Inferse?
GraphDB is ranked #1 of 25 with a score of 8.9. AllegroGraph is second and Stardog third.
How many of these have a free plan?
9 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, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.