World Wide Web Consortium W3C Markup Validation Service W3C Software Notice and License XML Schema (W3C) W3C Geolocation API Chris Lilley (computer scientist) W3C MMI W3C Device Description Working Group Web Accessibility Initiative CERN httpd MathML HTML5 HTML Tidy Libwww Webmention XPointer HTML+TIME Indexed Database API WHATWG XML schema SMuFL Yan Zhu Fundación CTIC Robin Berjon Amaya (web editor) Encrypted Media Extensions Micropub (protocol) Document Object Model Compound Document Format XHTML+MathML+SVG XHTML Basic Web platform Improving Web Advertising Business Group SMIL Timesheets Steven Pemberton HTML editor Device Description Reposito…

ory HTML Working Group Simple Knowledge Organization System Thing Description Technical Architecture Group Web Authentication Working Group Embedded OpenType SHACL XHTML+RDFa Annotea XML Information Set Synchronized Multimedia Integration Language Linked Data Platform RDF query language Protocol for Web Description Resources Web Content Accessibility Guidelines CSS Working Group XML pipeline Arena (web browser) CSS grid layout Dan Connolly (computer scientist) JSON-LD RDF Schema XHTML Mobile Profile Media Source Extensio

ns RDF/XML N-Triples Microdata (HTML) Extensible Forms Description Language SVG Working Group Media Capture API WAI-ARIA Lisa Seeman XLink Extensible User Interface Protocol WebPlatform.org XHTML Web standards InkML Computer Graphics Metafile GRDDL Composite Capability/Preference Profiles WebXR SPKAC Steve Bratt Efficient XML Interchange HTML Web Open Font Format Web IDL WebVTT Precision Graphics Markup Language MusicXML XQuery IndieAuth CSS XKMS Decentralized identifier DOM event Semantic Web Stack SOAP with Attachments Speech Recognition Grammar Specification XSL Data Catalog Vocabulary Resource Description Fra