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Best Ontop Alternatives in 2026

12 platforms from knowledge graph software ranked against Ontop on the same published basis.

  1. 1
    AllegroGraph Free plan apiLinuxMacself-hostedWeb Free7.4
    Ontop vs AllegroGraph
  2. 2
    RDFox Free plan apiLinuxMacself-hostedWeb Free7.4
    Ontop vs RDFox
  3. 3
    GraphDB Free plan apiLinuxMacself-hostedWeb Free7.3
    Ontop vs GraphDB
  4. 4
    LinkedDataHub Free plan apiLinuxself-hostedWeb Free7.3
    Ontop vs LinkedDataHub
  5. 5
    RDF Studio Free plan apiLinuxMacWebWin Free7.3
    Ontop vs RDF Studio
  6. 6
    Stardog Free plan apiLinuxMacself-hostedWeb Free7.3
    Ontop vs Stardog
  7. 7
    TerminusDB Free plan apiLinuxself-hostedWeb Free7.3
    Ontop vs TerminusDB
  8. 8
    TypeDB Free plan apiLinuxMacself-hostedWeb $0.07/mo7.3
    Ontop vs TypeDB
  9. 9
    Apache Jena Fuseki Free plan apiLinuxself-hostedWebWin Free7.2
    Ontop vs Apache Jena Fuseki
  10. 10
    Eclipse RDF4J Free plan apiLinuxMacself-hostedWeb Free7.2
    Ontop vs Eclipse RDF4J
  11. 11
    Virtuoso Universal Server Free trial apiLinuxMacself-hostedWeb 6.9
    Ontop vs Virtuoso Universal Server
  12. 12
    Progress Semaphore Free trial apiLinuxself-hostedWebWin 6.8
    Ontop vs Progress Semaphore
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