– SQL (Structured Query Language)
– HTML (Hypertext Markup Language)
– CSS (Cascading Style Sheets)
– XML (Extensible Markup Language)
– RDF (Resource Description Framework)
– OWL (Web Ontology Language)
– XQuery (XML Query Language)
– SPARQL (SPARQL Protocol and RDF Query Language)
– XSLT (Extensible Stylesheet Language Transformations)
– JSON (JavaScript Object Notation)