21linked

21linked is a software platform designed to enable the creation, linking, and consumption of interconnected data across diverse applications. It emphasizes the principles of linked data and uses a graph-based data model to represent entities and their relationships, facilitating semantic interoperability among heterogeneous data sources.

The platform provides a core graph database, an API layer, and tooling for data modeling, ingestion, and transformation. It offers REST and GraphQL endpoints, supports data import from CSV, JSON, and RDF, and enables export to JSON-LD or RDF formats. Features for data provenance, versioning, access control, and auditing are included to support governance requirements.

Data in 21linked is organized as nodes and edges with schemas that describe entity types and relationships. The system includes schema registries and mapping facilities to align internal models with external ontologies. It is designed to interoperate with established standards like RDF and JSON-LD, aiding cross-system integration.

Typical applications include knowledge graphs for enterprise data integration, supply chain visibility, product catalogs, and IoT data consolidation. Users can perform expressive queries, visualize networks of entities, and build dashboards that reflect linked data relationships. The platform supports collaborative workflows for data curation and enrichment.

Development and governance information is maintained in project documentation, with emphasis on extensibility and interoperability. The platform is described as open to integrations with third-party data sources and tools through its modular architecture and APIs.