LinkedDataHub
LinkedDataHub: A focused open-source toolkit for managing, querying, and building on RDF data. Ranked #25 of 33 in Knowledge Graph Software by our editors (6.7/10); pricing: Free plan; best for free open-source RDF apps and knowledge graphs.
At a glance
- Editor score6.7 / 10
- PricingFree plan
- Best forFree open-source RDF apps and knowledge graphs
- Free planYes
- Paid fromFree
- Founded2011 · Lithuania
- Facts checked21 Sep 2026
Where it wins
- RDF management, ontology modeling, and SPARQL 1.1 querying
- CSV and RDF imports with graph, chart, and table visualizations
- Low-code apps with authentication, access control, CLI, and HTTP APIs
Where it doesn't
- Its scope is centered on RDF, linked data, and SPARQL workflows
- Commercial consulting, development, and support are separate services
- Reasoning support is not specified
Our verdict on LinkedDataHub
LinkedDataHub is an open-source knowledge graph application platform from AtomGraph. It is aimed at researchers, developers, and data teams that need to manage RDF data, model domain concepts, query SPARQL endpoints, browse linked data, and create low-code applications. The platform combines a read-write RDF graph store interface with ontology and domain model management, customizable user interfaces, authentication, access control, and RDFa-aware rich text editing. It is available on the web, Linux, and self-hosted deployments.
The published product details position LinkedDataHub as a free open-source option rather than a tiered SaaS product. Its capabilities cover RDF knowledge graph management, CSV and RDF imports, SPARQL 1.1 querying, and visualization through graphs, charts, and tables. Deployment can be local, on-premises, or in cloud environments, with Docker support. That combination suits teams that want control over where their graph application runs and how it is configured. Commercial consulting, development, and support are available from AtomGraph, while the software itself remains open source.
LinkedDataHub fits ecosystems built around Apache Jena Fuseki, SPARQL 1.1 endpoints, Linked Data resources, and Docker. Its low-code development tools, WebID and OpenID Connect authentication, web access control authorizations, command-line interface, and HTTP API extend the platform beyond a query interface. The trade-off is focus: organizations working primarily with RDF, ontologies, and linked data will find the feature set aligned with their workflows, while teams seeking a general-purpose knowledge graph product outside that ecosystem may prefer a broader alternative. Choose LinkedDataHub for an open-source RDF application foundation; choose another tool if RDF and SPARQL are not central requirements.
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LinkedDataHub pricing
LinkedDataHub fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Ontology modeling | Yes |
| Semantic reasoning | Not verified |
| RDF/SPARQL support | Yes |
| Graph visualization | Yes |
| Import formats | CSV, RDF |
| Deployment | Both |
| Query languages | SPARQL 1.1 |
| Deployment | Cloud, Self-hosted |
| Platforms | Web, Linux |
| Support | Email, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: Apache Jena Fuseki, SPARQL 1.1 endpoints, Linked Data resources, Docker |
| Pricing | Free plan |
| Website | atomgraph.github.io |
| Facts checked | 21 Sep 2026 |
LinkedDataHub integrations
LinkedDataHub lists 4 integrations on its own site.
- Apache Jena Fuseki
- SPARQL 1.1 endpoints
- Linked Data resources
- Docker
Alternatives to LinkedDataHub
- Neo4jA developer-focused property graph with broad tooling, cloud options, and AI-ready search.9.3
- ProtégéA strong free choice for OWL ontology work, with collaboration and reasoning options.9.1
- Progress SemaphoreA mature platform for ontology management, semantic enrichment, and enterprise knowledge graphs.9.0
See all LinkedDataHub alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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