LinkedDataHub vs Stardog
LinkedDataHub
atomgraph.github.io
Stardog
stardog.comSide by side
| Figure | LinkedDataHub | Stardog |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 5 |
| Spec score · Knowledge Graph Software | 8.8 (#5) | 8.4 (#11) |
| API | LinkedDataHub implements a REST-style API based on the SPARQL 1.1 Graph Store Protocol. | Unified data is exposed through a REST API and a SQL-compatible BI server. |
| Company headquarters | LinkedIn lists AtomGraph headquarters in Copenhagen, Denmark, with another location in Kaunas, Lithuania. | The current LinkedIn company profile lists headquarters in New York, New York, while Stardog’s own footer lists an Arlington, Virginia address. |
| Company size | LinkedIn lists AtomGraph as privately held with 2–10 employees. | LinkedIn lists Stardog at 51–200 employees. |
| Deployment | The setup guide runs LinkedDataHub locally with Docker Compose and stores RDF data in backend triplestores. | Stardog can run as a managed AWS cloud service, in customer cloud environments, or on premises through Docker, Kubernetes, AWS Marketplace, and Azure Marketplace. |
| Documentation depth | Documentation covers administration, CLI, configuration, data models, dataspaces, HTTP API, imports, triplestores, stylesheets and user tutorials. | Official documentation includes administration, querying, virtualization, inference, constraints, tutorials, API references, examples and application-building guidance. |
| Founded | 2011 | 2006 |
| Funding news | AtomGraph says LinkedDataHub version 5 was released July 2, 2025 after an 18-month cycle with NLNet funding assistance. | A January 3, 2018 release said Stardog added $3 million from Tenfore Holdings, bringing its Series A total to $9 million. |
| Headquarters | Lithuania | New York, New York, United States |
| 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. | Connectors cover databases including Snowflake, BigQuery, Oracle, PostgreSQL, MongoDB, Elasticsearch, Salesforce, Jira, Splunk, and REST sources. |
| Purpose | LinkedDataHub is an open-source, low-code platform for managing data, creating visualizations, and building apps on RDF knowledge graphs. | Stardog connects enterprise data into a semantic layer for AI, analytics, search, and applications. |
| Self-hosting | Deployment uses Docker and Docker Compose, with local, on-premises and cloud options documented. | Users can download and install a self-managed database on their own infrastructure or deploy through AWS Marketplace. |
| Support | The documentation lists a mailing list, issue reporting, and support contact as support channels. | Enterprise licenses include base support, a dedicated Customer Success representative, and access to Solutions Architects. |
| What it does | LinkedDataHub is a low-code platform for managing RDF knowledge graphs, creating visualizations and building applications. | Stardog is a semantic AI and enterprise knowledge-graph platform that unifies data and adds business context for analytics, applications and AI. |
Plans
Stardog
- Stardog Cloud FreeFree
- Stardog FreeFree
- Stardog FreeFree
- Stardog Cloud EnterprisePriced on request
- Stardog EnterprisePriced on request
In their own words
LinkedDataHub
LinkedDataHub is an open-source, low-code platform for managing data, creating visualizations, and building applications on RDF knowledge graphs. It can also operate as an RDF-native content management platform. The interface includes UI components, SPARQL templates for creating and editing content, and SPIN and SHACL constraints for validating incoming data. CSV and RDF imports are supported, with SPARQL CONSTRUCT used for mapping or transformation. Authentication supports WebID and OpenID Connect with Google and ORCID. WAC permissions cover read, write, append, and control access. Git-backed document history is available through Memento. The platform exposes a SPARQL endpoint and read-write Linked Data API, serving documents as HTML or RDF from the same URIs. It uses Apache Jena Fuseki by default, supports compatible SPARQL 1.1 triplestores, and runs locally with Docker Compose. The project is self-hosted under Apache 2.0.