No. 10 of 33 ·Knowledge Graph Software

LinkedDataHub

Web · Linux · Self-hosted · API

Freedom report

Two barsScore 6.5

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

LinkedDataHub is ranked #10 of 33 in knowledge graph software on Freedom251. It runs on API, Linux, Self-hosted, Web. There is a free plan.

LinkedDataHub plans and pricing

All plans

Open-source Free Apache 2.0 license · self-hosted setup atomgraph.github.io · 4 Oct 2026

Compared on knowledge graph software

Free plan: Yes
Ontology modeling: Yes
RDF/SPARQL support: Yes
Graph visualization: Yes
Import formats: CSV, RDF
Deployment: both
Query languages: SPARQL 1.1

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The record

Purpose: LinkedDataHub is an open-source, low-code platform for managing data, creating visualizations, and building apps on RDF knowledge graphs.
RDF content platform: It can also be used as an RDF-native content management platform.
Features: It provides a UI component library, SPARQL-based creation and editing templates, and SPIN and SHACL constraints for validating incoming data.
Data imports: It supports CSV imports mapped to RDF with SPARQL CONSTRUCT and RDF imports transformed with SPARQL CONSTRUCT.
Authentication: Authentication supports WebID and OpenID Connect with Google and ORCID.
Access control: Access control uses WAC authorizations with read, write, append, and control modes.
Versioning: Git-backed document versioning uses the Memento protocol to access document history.
API: The platform provides a SPARQL endpoint and a read-write Linked Data API, and documents can be served as HTML or RDF from the same URIs.
Integrations: LinkedDataHub uses Apache Jena Fuseki by default and can work with SPARQL 1.1-compatible triplestores that support SPARQL Query, SPARQL Update, and Graph Store Protocol.
Security detail: SPARQL service credentials can use HTTP Basic or Bearer token authentication and are stored in a gitignored secrets folder.
Supported imports: The get-started guide says the currently supported data imports are CSV and RDF.
Support: The documentation lists a mailing list, issue reporting, and support contact as support channels.
Intended users: The product page presents use cases for researchers and data scientists, developers and data publishers, and AI agents and their builders.
Founded: 2011
Price from: Free

Where it ranks on Freedom251

Best Knowledge Graph Software in 2026#10 of 33

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Sources

atomgraph.github.io/LinkedDataHub/· checked 4 Oct 2026
atomgraph.github.io/LinkedDataHub/linkeddatahub/docs/about/· checked 4 Oct 2026
atomgraph.github.io/LinkedDataHub/linkeddatahub/docs/refere· checked 4 Oct 2026
atomgraph.github.io/LinkedDataHub/linkeddatahub/docs/refere· checked 4 Oct 2026
atomgraph.github.io/LinkedDataHub/linkeddatahub/docs/refere· checked 4 Oct 2026
atomgraph.github.io/LinkedDataHub/linkeddatahub/docs/get-st· checked 4 Oct 2026