HTML 5 and Related Web Development Technologies Markup Languages HTML 5 HTML 5 is the current generation of the Hypertext Markup Language. It is based on SGML and can be serialized using either xHTML syntax, the XML-based serialization of HTML, or legacy HTML syntax. XML SGML MathML Mathematical markup language SVG Scalable vector graphics Microdata in HTML Style Sheets Cascading Style Sheets (CSS) Extensible Style Sheets Extensible Style Sheet Language (XSL) and XSL Transformations (XSLT) Scripting Languages JavaScript Object Models Document Object Model (DOM)