Atom (Atom Syndication Format) CDF (Channel Definition Format) CML (Chemical Markup Language) – popis chemických vzorců DocBook – psaní publikací, primárně dokumentací InkML MathML (Mathematic Markup Language) ODF (Open Document Format) RDF/XML – Resource Description Framework v XML provedení RSS (Rich Site Summary / RDF Site Summary) SMIL (Synchronized Multimedia Integration Language) SVG (Scalable Vector Graphic) – vektorová grafika XForms XHTML (Extensible HyperText Markup Language) – webové dokumenty, XML reformulace HTML XSD (XML Schema Definition) XSL (eXtensible Stylesheet Language) XUL (XML User Interface Language) VML (Vector Markup Language) WML (Wireless Markup Language)