Similar to Speech_Synthesis_Markup_Language
 - Broadcast Contents Markup Language
 - Citation Style LanguageCitation Style Language
 - COLLADACOLLADA
 - ECMAScript for XMLECMAScript for XML
 - Extensible Metadata PlatformExtensible Metadata Platform
 - Extensible Resource IdentifierExtensible Resource Identifier
 - Friend of a FriendFOAF
 - JAX-RPCJakarta XML RPC
 - Job Definition FormatJob Definition Format
 - Medical Markup Language
 - Music Markup LanguageMusic Markup Language
 - MusicXMLMusicXML
- OpenDocumentOpenDocument
 - OpenFormulaOpenFormula
 - OpenSearchOpenSearch (specification)
 - Outline Processor Markup LanguageOPML
 - OWLWeb Ontology Language
 - RDFクエリ言語RDF query language
 - RSSRSS
 - SAMLSecurity Assertion Markup Language
 - SitemapsSitemaps
 - SPMLService Provisioning Markup Language
 - Streaming Transformations for XMLStreaming Transformations for XML
 - Translation Memory eXchangeTranslation Memory eXchange
 - Universal Business LanguageUniversal Business Language
 - UTXUniversal Terminology eXchange▲1 trends
 - Video Ad Serving TemplateVideo Ad Serving Template
 - WDDXWDDX