LinkedDataHub
7.5#7 in knowledge graph softwareFree planFree planWebAPILinuxmacOS
VisitLinkedDataHub vs Stardog
What both publish
| Fact | LinkedDataHub | Stardog |
|---|---|---|
| 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. |
LinkedDataHub plans
- Open-sourceFree
Stardog plans
- Stardog Cloud FreeFree
- Stardog FreeFree
- Stardog Cloud EnterprisePriced on request
- Stardog EnterprisePriced on request
Pick LinkedDataHub if…
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.
Pick Stardog if…
Stardog suits organizations that need to unify data across cloud and on-premises sources for analytics, AI, search, or applications. It is also relevant to teams that need graph-based data modeling, standards-based querying, and deployment options spanning managed cloud and self-hosting.