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Comparing the planned feature of the different (proposed) incubating Apache Projects

Feature

Jena

Clerezza

Stanbol

Performant and scalable storage of triples

X

Default Distros include Jena TDB or Sesame

 

SPARQL Endpoint

X

Distributing queries to backends

Delegated to Clerezza

Java API for accessing and manipulating RDF graphs

X

X

 

Scala DSL for accessing and manipulating RDF Graphs

 

X

 

Generic mechanism to transform RDF data to any format

 

X

 

Support for categorizing resources using SKOS

 

X

?

SPI for systems providing suggestion for the categorization of Information Resources

 

X

X

Exposing RDF data over a REST API with Conneg

X

X

 

Extensability and customization of Rest API base on URI-Path

 

X

 

Extensability and customization of Rest API base on RDF -Type of Resource

 

X

 

Inferencing support (OWL)

X

 

 

RDF rules language

X

 

X (with delegation to inference engines)

Parsers for RDF serializations

X

X (Formats supported by Jena, RDFa, RDF/JSON)

 

Writers for RDF serializations

X

X (Formats supported by Jena, RDF/JSON, and stable n-triples)

X (some prototype for JSON-LD that will either move to Clerezza or to Jena)

Support for multiple storage backends

X

X

(Delegated to Clerezza)

Authentication and Authorization Framework

 

X

 

Social Web features (WebId, OpenId, user specific graphs)

 

X

 

Social Distance Based Authorization

 

Planned

 

OSGi service to chain engines that analyze text and output results as RDF

 

 

X

OSGi service to syndicate, map and cache remote linked open data sources (dbpedia, freebase, ...)

 

cache for dbpedia or other skos taxonomy sparql-service.

X

OSGi service to suggest mapping with linked data entities based on similarity queries on lucene/solr fulltext indices of entities

 

 

X

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