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Best Progress Semaphore Alternatives in 2026

Updated

20 platforms from knowledge graph software ranked against Progress Semaphore on the same published basis.

  1. 1
    AllegroGraph Free plan apiLinuxMacself-hostedWeb Free7.4
    Progress Semaphore vs AllegroGraph
  2. 2
    RDFox Free plan apiLinuxMacself-hostedWeb Free7.4
    Progress Semaphore vs RDFox
  3. 3
    GraphDB Free plan apiLinuxMacself-hostedWeb Free7.3
    Progress Semaphore vs GraphDB
  4. 4
    LinkedDataHub Free plan apiLinuxself-hostedWeb Free7.3
    Progress Semaphore vs LinkedDataHub
  5. 5
    RDF Studio Free plan apiLinuxMacWebWin Free7.3
    Progress Semaphore vs RDF Studio
  6. 6
    Stardog Free plan apiLinuxMacself-hostedWeb Free7.3
    Progress Semaphore vs Stardog
  7. 7
    TerminusDB Free plan apiLinuxself-hostedWeb Free7.3
    Progress Semaphore vs TerminusDB
  8. 8
    TypeDB Free plan apiLinuxMacself-hostedWeb $0.07/mo7.3
    Progress Semaphore vs TypeDB
  9. 9
    Apache Jena Fuseki Free plan apiLinuxself-hostedWebWin Free7.2
    Progress Semaphore vs Apache Jena Fuseki
  10. 10
    Eclipse RDF4J Free plan apiLinuxMacself-hostedWeb Free7.2
    Progress Semaphore vs Eclipse RDF4J
  11. 11
    Virtuoso Universal Server Free trial apiLinuxMacself-hostedWeb 6.9
    Progress Semaphore vs Virtuoso Universal Server
  12. 13
    Timbr Free trial apiLinuxself-hostedWeb 6.8
    Progress Semaphore vs Timbr
  13. 14
    Neo4j Free plan self-hosted $65/mo6.0
    Progress Semaphore vs Neo4j
  14. 15
    Mendix Free plan Free5.9
    Progress Semaphore vs Mendix
  15. 16
    Protégé Free plan LinuxMacWebWin Free5.9
    Progress Semaphore vs Protégé
  16. 17
    OWLGrEd Free plan WebWin Free5.6
    Progress Semaphore vs OWLGrEd
  17. 18
    d.AP 5.2
    Progress Semaphore vs d.AP
  18. 19
    Fluent Editor Win 5.2
    Progress Semaphore vs Fluent Editor
  19. 20
    HASH Free plan apiextensionself-hostedWeb $1.67/mo5.2
    Progress Semaphore vs HASH
  20. 21
    Mondeca Web 5.2
    Progress Semaphore vs Mondeca

Progress Semaphore alternatives compared

#PlatformScoreFree planFromRuns on
1AllegroGraph7.4Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
2RDFox7.4Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
3GraphDB7.3Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
4LinkedDataHub7.3Free planFreeAPI, Linux, self-hosted, Web
5RDF Studio7.3Free planFreeAPI, Linux, Mac, Web, Windows
6Stardog7.3Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
7TerminusDB7.3Free planFreeAPI, Linux, self-hosted, Web
8TypeDB7.3Free plan$0.07/moAPI, Linux, Mac, self-hosted, Web, Windows
9Apache Jena Fuseki7.2Free planFreeAPI, Linux, self-hosted, Web, Windows
10Eclipse RDF4J7.2Free planFreeAPI, Linux, Mac, self-hosted, Web, Windows
11Virtuoso Universal Server6.9No—API, Linux, Mac, self-hosted, Web, Windows
13Timbr6.8No—API, Linux, self-hosted, Web
14Neo4j6.0Free plan$65/moself-hosted
15Mendix5.9Free planFree—
16Protégé5.9Free planFreeLinux, Mac, Web, Windows
17OWLGrEd5.6Free planFreeWeb, Windows
18d.AP5.2No——
19Fluent Editor5.2No—Windows
20HASH5.2Free plan$1.67/moAPI, Browser, self-hosted, Web
21Mondeca5.2No—Web
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Questions about Progress Semaphore alternatives

What is the best alternative to Progress Semaphore?

AllegroGraph, number 1 in knowledge graph software with a score of 7.4 out of 10. The others here: RDFox, GraphDB, LinkedDataHub and 16 more.

What is the best free alternative to Progress Semaphore?

AllegroGraph is the best-ranked alternative with a free plan. 15 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives 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.