. "Virtuoso" . "Web 3.0"@en . "Semantic Web" . "Yes, OpenLink usually offers trial versions of their commercial licenses for potential customers. The trial version is typically available for a limited time and allows you to evaluate the product before purchase."@en . . . "Linked Data" . . . "Graph Database" . "Knowledge Graph" . . . . . "Yes, OpenLink usually offers trial versions of their commercial licenses for potential customers. The trial version is typically available for a limited time and allows you to evaluate the product before purchase."@en . .