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A modular framework
for querying Linked Data
on the Web.

Querying Web-first

Web-first querying

Using a collection of swappable components and native Web technologies, Comunica can be instantiated into a query engine that can handle query languages such as SPARQL.

SPARQL queries can be evaluated via the command line, the JavaScript API, any Web browser with Comunica SPARQL.

Heterogeneous interfaces

Modules are provided to execute federated or single-source queries over any type of data source:

Triple Pattern Fragments interfaces
SPARQL endpoints
data dumps in various RDF serializations
compressed HDT datasets
versioned OSTRICH datasets
...

Modular

Comunica is a collection of modules that can be combined to achieve a certain task.

Engines can be instantiated using semantic configuration files, using the Components.js dependency injection framework.

Getting started

Web Client Live Comunica version to try out queries from your browser
Comunica SPARQL SPARQL querying from JavaScript applications or the CLI
Comunica SPARQL File Library to query over local RDF files
Comunica SPARQL RDFJS Library to query over in-memory RDFJS sources
Comunica SPARQL HDT Library to query over local HDT files
Comunica Framework Repository with all Comunica modules

Find out more by reading the full documentation, following some tutorials, diving into the source code, or reading our technical article.