"Web 3.0"@en . . . . "Semantic Web" . "The pricing for the commercial license of OpenLink Virtuoso is based on several factors including the required features, the number of servers, and the nature of support services. Please reach out to OpenLink directly for a custom quote."@en . . "The pricing for the commercial license of OpenLink Virtuoso is based on several factors including the required features, the number of servers, and the nature of support services. Please reach out to OpenLink directly for a custom quote."@en . . . "Linked Data" . "Graph Database" . "Knowledge Graph" . . . . . "Virtuoso" .