This list shows notable triplestores, APIs, and other storage engines that have implemented the W3C SPARQL standard.
Amazon Neptune Apache Marmotta (retired in November 2020) AllegroGraph Eclipse RDF4J Apache Jena with ARQ Blazegraph (no new development since November 2022) Corese (archived since Jan 28, 2025) Cray Urika-GD Comunica IBM Db2 - Removed in v11.5. KAON2 MarkLogic Mulgara NitrosBase Ontop Ontotext GraphDB Oracle DB Enterprise Spatial & Graph Oxigraph RDFLib Python library Redland / Redstore Stardog TinySPARQL part of the GNOME Project QLever Virtuoso
References
See also Comparison of structured storage software Graph database § List of graph databases