Extensible Markup Language that presents data structure in a format that is readable by humans and machines. With XML, data can be exchanged between different platforms and systems.
Query language that addresses parts of an XML document. Xpath is designed to be used by XSLT, for example.
Extensible Stylesheet Language. Umbrella term for a language family consisting of XSL-FO, XSLT, and XPath. XSL defines the transformation and output of XML documents.
Extensible Stylesheet Language Formatting Objects. Markup language and part of the XSL language family, which is used to describe how to arrange text and elements on a page. XSL-FO is mainly used to create PDF documents from XML sources.
Extensible Stylesheet Language Transformations. Component of XSL and used to transform XML documents into formats like HTML or other XML definitions.
Open-source and extensible semantic wiki.