OpenLink Virtuoso is a scalable, high-performance multi-model database management systems and application server combo. All interaction with Virtuoso occurs via its support of industry standard query languages, protocols, APIs, and data formats such as: ODBC, JDBC, OLE-DB, ADO.NET, XMLA, SQL, SPARQL, XQuery, SOAP, HTTP, WebDAV, SyncML, Atom (Publishing and Syndication), OpenID, OAuth, WebID, RSS, XML, RDF, and more.