The World Wide Web Consortium is the standards body responsible for defining XML, HTML, CSS and advising the web developer community on such issues as accessibility, internationalization etc. The W3C web site http://www.w3.org should be in every web developer's list of favourites. The documents there are rather dry but they are certainly definitive. Unfortunately the W3C has no teeth, so the standards it proposes are often ignored or at best poorly applied by web developers, browser developers and tool developers. This unfortunate situation accounts for the frustration that any contentious web developer feels when he or she tries to produce valid standards-conforming documents that will actually work on all browsers across all platforms. See also: WHATWG.

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