RDF.rb is a pure-Ruby library for working with Resource Description Framework (RDF) data.

Hyrax is a featureful Samvera front-end based on the latest and greatest Samvera software components.

JSON::LD parses and serializes JSON-LD into RDF and implements expansion, compaction and framing API interfaces for the Ruby RDF.rb library suite.

iQvoc - a SKOS(-XL) vocabulary management system built on the Semantic Web

Provides a set of uniform RESTful routes to query any controlled vocabulary or set of authority terms.

Spira is a framework for using the information in RDF.rb repositories as model objects.

RDF::RDFa is an RDFa reader/writer for Ruby using the RDF.rb library suite.

A metadistribution of RDF.rb including a full set of parsing/serialization plugins.

RDF::Turtle is an Turtle reader/writer for the RDF.rb library suite.

An ORM using the Data Mapper pattern, specifically built to solve Digital Repository use cases.

Linked Data Platform client library

RDF::N3 is an Notation-3 reader/writer and reasoner for the RDF.rb library suite.

RDF::RDFXML is an RDF/XML reader and writer for the RDF.rb library suite.

ActiveTriples provides tools for modeling RDF as discrete resources.

The BEL gem allows the reading, writing, and processing of BEL (Biological Expression Language) with a natural DSL.

Portland Common Data Model (PCDM)

Reasons over RDFS/OWL vocabularies to generate statements which are entailed based on base RDFS/OWL rules along with vocabulary information. It can also be used to ask specific questions, such as if a given object is consistent with the vocabulary ruleset. This can be used to implement SPARQL Entailment Regimes.

RDF::Tabular processes tabular data with metadata creating RDF or JSON output.

A Rails Engine that allows an application to CRUD CurationConcern objects (a.k.a. "Works")

Models used in the Duke Digital Repository