XML

XBEL, or the XML Bookmark Exchange Language, is an open XML standard for sharing Internet URIs, also known as bookmarks (or favorites in Internet Explorer).

Adobe FrameMaker is a document processor designed for writing and editing large or complex documents, including structured documents.

Vega Strike is a first-person space trading and combat simulator, developed for Microsoft Windows, Linux, FreeBSD and OS X systems.

UIML (User Interface Markup Language) is an XML-based user interface markup language for defining user interfaces on computers.

Wireless Markup Language (WML), based on XML, is a markup language intended for devices that implement the Wireless Application Protocol (WAP) specification, such as mobile phones.

WAP Binary XML (WBXML) is a binary representation of XML.

In computing, RELAX NG (REgular LAnguage for XML Next Generation) is a schema language for XML - a RELAX NG schema specifies a pattern for the structure and content of an XML document.

Extensible Hypertext Markup Language (XHTML) is part of the family of XML markup languages.

XPath (XML Path Language) is a query language for selecting nodes from an XML document.

XSD (XML Schema Definition), a recommendation of the World Wide Web Consortium (W3C), specifies how to formally describe the elements in an Extensible Markup Language (XML) document.

In markup languages, Schematron is a rule-based validation language for making assertions about the presence or absence of patterns in XML trees.

Metalink is an extensible metadata file format that describes one or more computer files available for download.

The Standard Generalized Markup Language (SGML; ISO 8879:1986) is a standard for defining generalized markup languages for documents.

Office Open XML (also informally known as OOXML or OpenXML or earlier as MOX) is a zipped, XML-based file format developed by Microsoft for representing spreadsheets, charts, presentations and word processing documents.

XML Linking Language, or XLink, is an XML markup language and W3C specification that provides methods for creating internal and external links within XML documents, and associating metadata with those links.

WDDX (Web Distributed Data eXchange) is a programming language-, platform- and transport-neutral data interchange mechanism designed to pass data between different environments and different computers.

The Resource Description Framework (RDF) is a family of World Wide Web Consortium (W3C) specifications originally designed as a metadata data model.

XPointer is a system for addressing components of XML based Internet media.

Sedna is an open source database management system that provides native storage for XML data.

XDXF (XML Dictionary eXchange Format) is a project to unite all existing open dictionaries and provide both users and developers with universal XML-based format, convertible from and to other popular formats like Mova, PtkDic, StarDict.

BaseX is a native and light-weight XML database management system and XQuery processor, developed as a community project on GitHub.

Plain Old XML (POX) is the basic XML, sometimes mixed in with other, blendable specifications like XML Namespaces, Dublin Core, XInclude and XLink.

UJML (Ujinn Markup Language) is a proprietary XML-based language created by UIEvolution.

XSLT (Extensible Stylesheet Language Transformations) is a language for transforming XML documents into other XML documents, or other formats such as HTML for web pages, plain text or XSL Formatting Objects, which may subsequently be converted to other formats, such as PDF, PostScript and PNG.

An XML schema is a description of a type of XML document, typically expressed in terms of constraints on the structure and content of documents of that type, above and beyond the basic syntactical constraints imposed by XML itself.

HyTime (Hypermedia/Time-based Structuring Language) is a markup language that is an application of SGML.

OIOXML is a project by the Danish government to develop a number of reusable data components serializable in various formats, although currently the only method of serialization for OIOXML data is in the XML format.

The DITA Open Toolkit (DITA-OT) is an open-source publishing system for publishing DITA.

Streaming XML is a synonym for dynamic data in XML format.

The programming language XQuery defines FLWOR (pronounced 'flower') as an expression that supports iteration and binding of variables to intermediate results.

Each XML document has exactly one single root element.

eXtensible Text Framework (XTF) is an XML framework created and maintained by the California Digital Library (CDL) based on XML data, XSLT 2.

Clusterpoint is a European software technology company developing and supporting Clusterpoint database management system platform.

CodeSynthesis XSD is an XML Data Binding compiler for C++ developed by Code Synthesis and dual-licensed under the GNU GPL and a proprietary license.

Arbortext Command Language, most-commonly referred to as ACL, is a scripting language for PTC's Arbortext software.