W3C - XHTML2 Working Group
The mission... XHTML2 Working Group is to fulfill the promise of XML for applying XHTML to a wide variety of platforms.
DevGuru XHTML Introduction
180 page reference guide that defines and explains all of the tags, events, and associated attributes that compose XHTML
XHTMLforum (German)
Provides questions and answers to the construction and form of a XHTML document. (In German).
AnyBrowser.COM
Browser compatibility verification. Increase Your Visibility! Make Your Site Viewable by Any Browser!
Tradingeye - XHTML CSS Shopping Cart
Tradingeye is a web standards compliant shopping cart and CMS built with web accessibility and SEO in mind.
HTML Goodies - XHTML
On January 26, 2000, W3C released specifications defining what they termed XHTML. Extensible Hypertext Markup Language.
XHTML Character Entity Reference
252 allowed entities in HTML 4 and XHTML 1.0, as outlined in section 24 of the official HTML 4 specifications.
Elegant Themes - Premium WP Themes
Each of my WordPress themes come widget ready and coded in valid XHTML 1.0 transitional and CSS.
Html Dog
The web designer's resource for everything HTML and CSS, the most common technologies used in making web pages.
XHTML Explained
XHTML tutorials with code examples. Argh! Just when we were all getting comfortable with the HTML 4 they make a change.
HTML and XHTML Document Type Definitions
This page lists and provides links to standard DTDs and SGML declarations for HTML and its successor language, XHTML.
HTML 4.01 / XHTML 1.0 Reference
Element and attribute definitions and examples, with alphabetical index, and also sorting by function.
Ektron, Inc.
Offer full-featured WYSIWYG XHTML/HTML editors for web content and document management. Includes product and support information.
Context Sensitive XHTML
This paper tries to introduce some new elements into the HTML language. The purpose of these elements is to create documents that can contain different pieces of information at the same time. These various pieces of information can be presented to the use