This list shows notable

triplestores A triplestore or RDF store is a purpose-built database for the storage and retrieval of triples through semantic queries. A triple is a data entity composed of subject– predicate–object, like "Bob is 35" or "Bob knows Fred". Much like a rela ...

API An application programming interface (API) is a way for two or more computer programs to communicate with each other. It is a type of software Interface (computing), interface, offering a service to other pieces of software. A document or standa ...

s, and other storages that have implemented the W3C

SPARQL SPARQL (pronounced "sparkle" , a recursive acronym for SPARQL Protocol and RDF Query Language) is an RDF query language—that is, a semantic query language for databases—able to retrieve and manipulate data stored in Resource Description F ...

standard. *

Amazon Neptune Amazon Neptune is a managed graph database product published by Amazon.com. It is used as a web service and is part of Amazon Web Services (AWS). It was announced on November 29, 2017. Amazon Neptune supports popular graph models property graph ...

Apache Marmotta Apache Marmotta is a linked data platform that comprises several components. In its most basic configuration it is a Linked Data server. Marmotta is one of the reference projects early implementing the new Linked Data Platform recommendation that ...

* AllegroGraph * Eclipse RDF4J *

Apache Jena Apache Jena is an open source Semantic Web framework for Java. It provides an API to extract data from and write to RDF graphs. The graphs are represented as an abstract "model". A model can be sourced with data from files, databases, URLs or ...

with ARQ *

Blazegraph Blazegraph is an open source triplestore and graph database, developed by Systap, which is used in the Wikidata SPARQL endpoint and by other large customers. It is licensed under the GNU GPL (version 2). Amazon acquired the Blazegraph developer ...

* Cray Urika-GD *

IBM Db2 Db2 is a family of data management products, including database servers, developed by IBM. It initially supported the relational model, but was extended to support object–relational features and non-relational structures like JSON a ...

- Removed in v11.5. * KAON2 *

MarkLogic MarkLogic Corporation is an American software business that develops and provides an enterprise NoSQL database, also named ''MarkLogic''. The company was founded in 2001 and is based in San Carlos, California. MarkLogic is a privately held compa ...

Mulgara Mulgaras are the two small rat-sized species in the genus ''Dasycercus''. They are marsupial carnivores, closely related to the Tasmanian devil and the quolls, that live in deserts and spinifex grasslands of arid Australia. They are nocturnal, ...

* NitrosBase *

Ontotext GraphDB Ontotext GraphDB (previously known as BigOWLIM) is a graph database and knowledge discovery tool compliant with RDF and SPARQL and available as a high-availability cluster. Ontotext GraphDB is used in various European research projects. As of ...

* Oracle DB Enterprise Spatial & Graph *

RDFLib RDFLib is a Python library for working with RDF, a simple yet powerful language for representing information. This library contains parsers/serializers for almost all of the known RDF serializations, such as RDF/XML, Turtle, N-Triples, & JSON- ...

Python library * Redland / Redstore *

Virtuoso A virtuoso (from Italian ''virtuoso'' or , "virtuous", Late Latin ''virtuosus'', Latin ''virtus'', "virtue", "excellence" or "skill") is an individual who possesses outstanding talent and technical ability in a particular art or field such as ...

See also