This document explains the syntax, vocabulary and the available APIs for HTML5 documents, focussing on simplicity and practical applications for beginners while also providing in depth information for more advanced web developers.
A number of simple utilities for manipulating HTML and XML files. See INSTALL for generic installation instructions. Get the source at: http://www.w3.org/Tools/HTML-XML-utils/
W3C Markup Validation Service, a free service that checks Web documents in formats like HTML and XHTML for conformance to W3C Recommendations and other standards.
a service that allows you to analyze, assess and validate any link using various tools and testers on the web. Rather than creating direct links to various validators and link analyzers, one link can be used to submit to all of them.
The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.
Amaya is a Web editor, i.e. a tool used to create and update documents directly on the Web. Browsing features are seamlessly integrated with the editing and remote access features in a uniform environment. This follows the original vision of the Web as a space for collaboration and not just a one-way publishing medium.