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Head-to-head · RDF Databases

Fluree DB vs Eclipse RDF4J

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Fluree DB #4 in RDF Databases 8.9/10 Free plan Free plan✓ 3 of 3 features Visit Fluree
Eclipse RDF4J #6 in RDF Databases 8.6/10 Open source ✓ 3 of 3 features Visit Eclipse RDF4J

Fluree DB leads on 0 checks, Eclipse RDF4J on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreFluree DB · 8.9/10
  • Free planonly Fluree DB

Fluree DB scores higher on our rubric for rdf databases: 8.9 against 8.6 out of 10; our editors rank them #4 and #6.

On sparql support, Eclipse RDF4J gives you Sparql 1.2 where Fluree DB offers Sparql 1.1.

Fluree DB is the better fit for modern open-source RDF with search and lineage. Eclipse RDF4J is the better fit for developers building RDF applications and services.

  • Fluree DB fits best

    Modern open-source RDF with search and lineage

  • Eclipse RDF4J fits best

    Developers building RDF applications and services

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 Fluree DB 8.9/10 Visit ↗ Eclipse RDF4J 8.6/10 Visit ↗
At a glance
Editor score 8.9 8.6
Ranking #4 in RDF Databases #6 in RDF Databases
Best for Modern open-source RDF with search and lineage Developers building RDF applications and services
Pricing model Free Free
Starting price Free Open source
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud, Self-hosted Cloud, Self-hosted, Desktop, Browser extension
Platforms Web Web, Linux, Windows, macOS
Support Email, Community, Docs Community, Docs
Integrations 300+ integrations 7 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Fluree DB 3/3 · Eclipse RDF4J 3/3
Reasoning support ✓ ✓
RDF-star support ✓ ✓
Federated queries ✓ ✓
Specs
Deployment options Not checked yet Self-hosted
SPARQL support Sparql 1.1 Sparql 1.2
Supported RDF formats JSON-LD, Turtle, N-Triples, N-Quads, TriG RDF/XML, Turtle, N-Triples, N-Quads, JSON-LD, TriG, TriX
Our review
Pros
  • Free open-source plan with local and self-hosted deployment
  • Combines reasoning, time travel, branching, and query-time policies
  • Built-in BM25 full-text, HNSW vector, and federated search
  • Supports SPARQL 1.2, RDF 1.2 terms, reasoning, and SHACL validation
  • Combines in-memory, native, federated, and remote repository workflows
  • Includes RDF4J Server and Workbench alongside Java APIs and RDF tooling
Cons
  • Enterprise pricing is custom
  • The feature set may exceed the needs of simple RDF projects
  • Cloud deployment is offered, but plan-level cloud details are limited
  • Primarily targets Java developers, narrowing fit for non-Java teams
  • Self-hosted deployment places infrastructure operations on the adopting team
  • Its framework-and-toolkit model is less direct than a hosted database service
Our verdict

Fluree DB is an open-source semantic graph database for developers and organizations building governed knowledge graphs and AI data foundations. It stores RDF data in an immutable, temporal ledger and supports JSON-LD, SPARQL 1.1, RDFS,…

Read the review →

Eclipse RDF4J is an open-source, modular Java framework for creating, parsing, storing, querying, reasoning over, and validating RDF data. It is aimed at developers building semantic-web, linked-data, knowledge-graph, and RDF database…

Read the review →
  1. Fluree DBRDF Databases 8.9Free plan
  2. Eclipse RDF4JRDF Databases 8.6Open source

Strengths and trade-offs

  • Fluree DB — where it wins

    • Free open-source plan with local and self-hosted deployment
    • Combines reasoning, time travel, branching, and query-time policies
    • Built-in BM25 full-text, HNSW vector, and federated search

    Where it doesn't

    • Enterprise pricing is custom
    • The feature set may exceed the needs of simple RDF projects
    • Cloud deployment is offered, but plan-level cloud details are limited

  • Eclipse RDF4J — where it wins

    • Supports SPARQL 1.2, RDF 1.2 terms, reasoning, and SHACL validation
    • Combines in-memory, native, federated, and remote repository workflows
    • Includes RDF4J Server and Workbench alongside Java APIs and RDF tooling

    Where it doesn't

    • Primarily targets Java developers, narrowing fit for non-Java teams
    • Self-hosted deployment places infrastructure operations on the adopting team
    • Its framework-and-toolkit model is less direct than a hosted database service

More comparisons

All RDF databases comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update