Strabon
Strabon: A focused self-hosted RDF database for linked geospatial and temporal workloads. Ranked #22 of 26 in RDF Databases by our editors (7.0/10); pricing: Free plan; best for geospatial and temporal RDF workloads.
At a glance
- Editor score7.0 / 10
- PricingFree plan
- Best forGeospatial and temporal RDF workloads
- Free planYes
- Paid fromFree
- Deployment optionsSelf-hosted
- Facts checked21 Sep 2026
Where it wins
- stSPARQL, GeoSPARQL, spatial joins, and temporal modeling
- PostgreSQL and PostGIS backend integration
- Open-source, self-hosted deployment with SPARQL and Java endpoints
Where it doesn't
- Focused on geospatial and temporal RDF rather than broad RDF workloads
- GeoSPARQL support is a subset, with one stated requirement exception
- The official website and documentation are dated
Our verdict on Strabon
Strabon is an open-source RDF database for teams storing and querying linked geospatial data, including information that changes over time. It is designed for geospatial analysts, semantic-web developers, and organizations that need spatial and temporal RDF workloads in a self-hosted environment. The system runs on Linux and Windows, exposes a SPARQL endpoint, and includes a Java endpoint client and command-line tools. PostgreSQL with PostGIS provides the backend, while Sesame/RDF4J supplies the RDF foundation.
Its main strength is the depth of its geospatial and temporal focus. Strabon queries stRDF with stSPARQL and supports a subset of GeoSPARQL, along with spatial selections, spatial joins, geometry functions, multiple coordinate reference systems, and WKT and GML geometry serialization. Temporal data and valid-time modeling extend that focus to datasets whose values change over time. The published capabilities also include RDFS entailment support for GeoSPARQL, except requirement 25. These features make Strabon a strong fit when location, time, and linked data need to be handled together rather than as separate concerns.
The deployment model favors teams comfortable managing infrastructure: Strabon is self-hosted and integrates with PostgreSQL, PostGIS, Apache Tomcat, and Sesame/RDF4J. That ecosystem can suit existing Java and PostgreSQL-based environments, but it also places setup and operational responsibility with the adopter. Its narrower geospatial scope means teams seeking a more general-purpose RDF database may prefer an alternative with broader application coverage. Choose Strabon for specialized spatiotemporal RDF work and an open-source deployment model; look elsewhere when geospatial and temporal capabilities are secondary to wider RDF functionality.
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Strabon pricing
Strabon fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Deployment options | Self-hosted |
| SPARQL support | Sparql 1.1 |
| Reasoning support | Yes |
| RDF-star support | Not verified |
| Federated queries | Not verified |
| Supported RDF formats | Not verified |
| Deployment | Self-hosted |
| Platforms | Linux, Windows |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: PostgreSQL, PostGIS, Apache Tomcat, Sesame/RDF4J |
| Pricing | Free plan |
| Website | strabon.di.uoa.gr |
| Facts checked | 21 Sep 2026 |
Strabon integrations
Strabon lists 4 integrations on its own site.
- PostgreSQL
- PostGIS
- Apache Tomcat
- Sesame/RDF4J
Alternatives to Strabon
- GraphDBA broad RDF platform with a free edition and enterprise-grade deployment options.9.3
- AllegroGraphA broad RDF platform for reasoning, federation, analytics, and vector-enabled knowledge graphs.9.1
- StardogA broad enterprise platform for federated queries, virtual graphs, and semantic reasoning.9.0
See all Strabon alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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