Best Knowledge Graph Software in 2026
Updated
33 knowledge graph software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
33ranked
0free plans on this page
5 Oct 2026last checked
Input list Knowledge Graph Software 8 channels on this page · 32 of 64 spec lines stated by the makers
Ch Tool Free planPaid fromOntology modelingSemantic reasoningRDF/SPARQL supportGraph visualizationImport formatsDeployment Spec sheet Score
26 Ontotext Platform Free planNoPaid fromnot statedOntology modelingYesSemantic reasoningYesRDF/SPARQL supportYesGraph visualizationYesImport formatscsv, tsv, excel, json, xmlDeploymentself hosted 7/8spec lines stated 5.9
27 Qlevia Enterprise RDF Graph Platform Free plannot statedPaid fromnot statedOntology modelingnot statedSemantic reasoningYesRDF/SPARQL supportYesGraph visualizationYesImport formatsnot statedDeploymentcloud 4/8spec lines stated 5.9
28 Wikibase Free planYesPaid fromnot statedOntology modelingYesSemantic reasoningnot statedRDF/SPARQL supportYesGraph visualizationnot statedImport formatsJSON, RDF, CSVDeploymentboth 5/8spec lines stated 5.9
29 Synaptica Free plannot statedPaid fromnot statedOntology modelingYesSemantic reasoningYesRDF/SPARQL supportYesGraph visualizationYesImport formatsExcel, CSV, RDF, OWL, SKOSDeploymentnot stated 5/8spec lines stated 5.8
30 InfoLibrarian Knowledge Graph Engine Free plannot statedPaid fromnot statedOntology modelingYesSemantic reasoningYesRDF/SPARQL supportnot statedGraph visualizationnot statedImport formatsCSV, Excel, JSON, XML, presentations, documents, PDFs, spreadsheets, diagrams, audioDeploymentboth 4/8spec lines stated 5.7
31 Oxigraph Free plannot statedPaid fromnot statedOntology modelingnot statedSemantic reasoningnot statedRDF/SPARQL supportYesGraph visualizationnot statedImport formatsTurtle, TriG, N-Triples, N-Quads, RDF/XML, JSON-LD, N3Deploymentboth 3/8spec lines stated 5.7
32 ROBOKOP Free plannot statedPaid fromnot statedOntology modelingNoSemantic reasoningYesRDF/SPARQL supportnot statedGraph visualizationYesImport formatsnot statedDeploymentcloud 4/8spec lines stated 5.7
33 eccenca Corporate Memory Free plannot statedPaid fromnot statedOntology modelingnot statedSemantic reasoningnot statedRDF/SPARQL supportnot statedGraph visualizationnot statedImport formatsnot statedDeploymentnot stated 0/8spec lines stated 5.6
Compare all 8 in a table
| # | Tool | Score | Free plan | Free plan | Paid from | Ontology modeling | Semantic reasoning |
|---|---|---|---|---|---|---|---|
| 26 | Ontotext Platform | 5.9 | No | No | — | Yes | Yes |
| 27 | Qlevia Enterprise RDF Graph Platform | 5.9 | No | — | — | — | Yes |
| 28 | Wikibase | 5.9 | No | Yes | — | Yes | — |
| 29 | Synaptica | 5.8 | No | — | — | Yes | Yes |
| 30 | InfoLibrarian Knowledge Graph Engine | 5.7 | No | — | — | Yes | Yes |
| 31 | Oxigraph | 5.7 | No | — | — | — | — |
| 32 | ROBOKOP | 5.7 | No | — | — | No | Yes |
| 33 | eccenca Corporate Memory | 5.6 | No | — | — | — | — |
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