URI/IRI, HTTP Web Architectural Principles XML Infosets; RDF(S) Graphs XML, Namespaces, Schemas, XQuery/XPath, XSLT, DOM, XML Base, XPointer, RDF/XML, SPARQL
在頂層包含著六個(gè)框，分別與W3C主要的活動(dòng)組相對(duì)應(yīng)：Web Applications, Mobile, Voice, Web Services, Semantic Web, and Privacy。
"Interaction"（“交互”）框中羅列著：XHTML, SVG, CDF, SMIL, XForms, CSS, 和 WCID. "Mobile"（“移動(dòng)”）框中羅列著 XHTML Basic, Mobile SVG, SMIL Mobile, XForms Basic, CSS Mobile, MWI BP. "Voice"（“語(yǔ)音”）框中羅列著 VoiceXML, SRGS, SSML, CCXML, and EMMA "Web Services"（“Web服務(wù)”）框中羅列著 SOAP, XOP, WSDL, WS-CDL, and WS-A. "Semantic Web"（“語(yǔ)義的Web”）框中羅列著 OWL, SKOS, and RIF. "Privacy"（“保密”）框中羅列著 P3P, APPEL, XML Encryption, XML Signature, and XKMS
一個(gè)橙色的橫條把這些領(lǐng)域聯(lián)系在一起：Web Accessibility（Web可訪問性）, Internationalization（國(guó)際化）, Mobile Access（移動(dòng)訪問）, Device Independence（設(shè)備獨(dú)立）, and Quality Assurance（質(zhì)量保證）。
