LinkedDataHub
LinkedDataHub is an open-source, low-code platform for managing data, making visualizations and building apps with RDF knowledge graphs.
What LinkedDataHub is
LinkedDataHub is an open-source, low-code platform for managing data, making visualizations and building apps with RDF knowledge graphs. It can also serve as an RDF-native content platform. Its tools include a UI component library, SPARQL-based templates for creating and editing data, and SPIN and SHACL constraints for checking incoming data. Imports support CSV mapped to RDF and RDF transformed through SPARQL CONSTRUCT. Authentication offers WebID and OpenID Connect with Google and ORCID; WAC controls access for reading, writing, appending and administration. Git-backed document history is accessible through Memento. The platform includes a SPARQL endpoint and a read-write Linked Data API, and can serve documents as HTML or RDF at the same URI. It uses Apache Jena Fuseki by default, but can work with compatible SPARQL 1.1 triplestores. The documented local setup uses Docker Compose, with RDF stored in backend triplestores. The project is available under the Apache 2.0 license and is self-hosted.
Good
- Supports CSV and RDF imports
- Offers SPARQL endpoint and read-write Linked Data API
- Documents can be served as HTML or RDF
- Git-backed version history uses Memento
Watch out
- Requires a self-hosted setup
- Current supported imports are limited to CSV and RDF
- Local setup uses Docker Compose
Who it suits
LinkedDataHub may suit researchers, data scientists, developers and data publishers working with RDF, as well as builders of AI agents. It is for users prepared to run a self-hosted setup and work with SPARQL-compatible data stores.
Verdict
LinkedDataHub combines RDF data management, app-building tools and APIs in a self-hosted platform. It is most relevant to teams comfortable with RDF and SPARQL 1.1 workflows.
Plans and prices
From LinkedDataHub's own pricing page, checked 15 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Open-source | Free | RDF knowledge-graph management · visualizations · app building · free AWS Marketplace product |
The facts
Each one read from LinkedDataHub's own pages, with the date it was checked.
What it does
- Access control
- Access control uses WAC authorizations with read, write, append, and control modes.checked 4 Oct 2026
- API
- LinkedDataHub implements a REST-style API based on the SPARQL 1.1 Graph Store Protocol.checked 15 Oct 2026
- API operations
- The API supports GET, POST, PUT, DELETE and PATCH document operations, with PATCH restricted to specific graph-scoped SPARQL update forms.checked 15 Oct 2026
- Authentication
- The UI supports WebID-TLS client certificates and OpenID Connect through Google or ORCID.checked 15 Oct 2026
- Authorization
- Document operations are access-controlled and unauthorized requests return HTTP 403.checked 15 Oct 2026
- Backing stores
- LinkedDataHub serves RDF from a backing triplestore, with Apache Jena Fuseki as the default and standards-compliant SPARQL stores supported.checked 15 Oct 2026
- CLI
- The ldh command-line program drives the same HTTP API as the UI and covers most UI actions.checked 15 Oct 2026
- CLI runtime
- Released CLI archives require Java 21; building from source additionally requires Maven.checked 15 Oct 2026
- Data architecture
- Applications and documents are represented as data and managed through a generic HTTP API, with declarative presentation rather than mandatory JavaScript or Java.checked 15 Oct 2026
- Data imports
- It supports CSV imports mapped to RDF with SPARQL CONSTRUCT and RDF imports transformed with SPARQL CONSTRUCT.checked 4 Oct 2026
- Deployment
- The setup guide runs LinkedDataHub locally with Docker Compose and stores RDF data in backend triplestores.checked 4 Oct 2026
- Documentation depth
- Documentation covers administration, CLI, configuration, data models, dataspaces, HTTP API, imports, triplestores, stylesheets and user tutorials.checked 15 Oct 2026
- Extensibility
- Custom Docker images, Java 21 Maven overlays, Jersey 3 REST resources, Apache Jena 6 components and Saxon XSLT extensions are documented.checked 15 Oct 2026
- Features
- It provides a UI component library, SPARQL-based creation and editing templates, and SPIN and SHACL constraints for validating incoming data.checked 4 Oct 2026
- Funding news
- AtomGraph says LinkedDataHub version 5 was released July 2, 2025 after an 18-month cycle with NLNet funding assistance.checked 15 Oct 2026
- Imports
- Documented import formats include CSV and RDF, with CSV-to-RDF mapping workflows.checked 15 Oct 2026
- Independent ecosystem listing
- The European Commission Interoperable Europe portal lists LinkedDataHub as Apache-licensed software with GUI, CLI and API interfaces for RDF management, SPARQL output and visualization.checked 15 Oct 2026
- 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.checked 4 Oct 2026
The company
- Company founding
- AtomGraph’s about page says it was founded in 2011 by Martynas Jusevičius and Džiugas Tornau.checked 15 Oct 2026
- Company headquarters
- LinkedIn lists AtomGraph headquarters in Copenhagen, Denmark, with another location in Kaunas, Lithuania.checked 15 Oct 2026
- Company size
- LinkedIn lists AtomGraph as privately held with 2–10 employees.checked 15 Oct 2026
- Founded
- 2011checked 28 Sep 2026
- Headquarters
- Lithuaniachecked 28 Sep 2026
Where it runs
- Data browser
- A built-in Linked Data browser can fetch and display external resources through a proxy.checked 15 Oct 2026
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