Articles
A Study of Extensible Markup Language, Articles on XML by Norman Walsh, Comparison of SGML and XML, d e v h e a d: XSL: How Stylish Can You Get?, Design Principles for XML, How to Find the Best XML Server, How XML is Changing the Future of Business, Introduction to XML For Web Developers, Louis Jean-Richard: Case Studies and Reports, OK, So What Is This XML Thing?
Books
Charles F. Goldfarb's XMLbooks.com, Definitive XML Schema - Author's Site, Definitive XML Schema: Author's Site, Designing XML Internet Applications, DocBook: The Definitive Guide, GCA Bookstore, IE5 Dynamic HTML Programmer's Reference, Implementing CDF Channels, Just XML, Practical Guide to SGML and XML Filters
Cafe con Leche
Daily news updates about XML, as well as lists of XML books, mailing lists, and tools.
IT World: XML in Practice
Online newsletter containing the latest industry news on XML.
NewsNow NewsLink
Dynamically updated page of links to articles relevant to XML from leading news sources. The site states that the page is updated every five minutes.
SGML and XML News
Short articles on new projects and current issues with relevant links to the originating sites. [Oasis]
VBXML.com: xmlNews
Email newsletter that includes new articles on XML, XHTML, B2B, opensource XML projects from around the web.
VoiceXML Review
Online e-zine for VoiceXML with features, articles, archives, speak and listen, call for papers, letters from the editor.
XML Magazine
XML Magazine delivers practical information about the architecture and structure of XML, as well as case studies and technical instructions for incorporating XML into Windows, Java, e-commerce and Web environments.
XML.org: News
Receive the latest industry news on XML and related technologies either online or via subscription.
xmlhack
News site for XML developers, distilling news, opinions, tips, and issues from diverse sources.