
Free XML book from O’Reilly Commons, “XPath and XPointer” fills an essential need for XML developers by focusing directly on a critical topic that has been covered only briefly.

Free XML book from O’Reilly Commons, “XPath and XPointer” fills an essential need for XML developers by focusing directly on a critical topic that has been covered only briefly.

Free book on SpamAssassin from O’Reilly Commons. SpamAssassin by Alan Schwartz, is the only published resource devoted to SpamAssassin and how to integrate it effectively into your networks.

Essential XML Quick Reference: A Programmer’s Reference to XML, XPath, XSLT, XML Schema, SOAP, and More is provided as a free download from theserverside.net.

Sams Teach Yourself XML in 21 Days, written by expert author Steve Holzner, offers hundreds of real-world examples demonstrating the uses of XML and the newest tools developers need to make the most of it. Read it online from sams reference library.

This 128-page free book covers the basics of Open XML, including many of the topics covered in the Open XML developer workshops, as well as several additional topics. The author, Wouter Van Vugt, is a software development trainer/consultant who specializes in the Open XML file formats.

Free SVG book from O’Reilly Commons. SVG Essentials opens the door to the rich language that underpins this emerging and fast-growing graphics language. Scalable Vector Graphics, which are described through text like a programming language and can be read on any computer platform with the appropriate viewer, hold great promise for the Web designer who knows how to take advantage of the latent power. This book helps to harness that power.

Free Jabber book from O’Reilly Commons. Programming Jabber offers developers a chance to learn and understand the Jabber technology and protocol from an implementer’s point of view. Detailed information of each part of the Jabber protocol is introduced, explained, and discussed in the form of mini-projects, or simple and extended examples.
Introduction to XML for Web Developers covers these topics: Understanding XML, XML Syntax and The DTD.
XML and Web Services Reference Guide is a online reference which covers many topics on XML and Web Services technologies.

This comprehensive guide to XSL Transformations (XSLT) and the XML Path Language (XPath) according to the XSLT/XPath 19991116 1.0 Recommendations is 150 pages of explanatory material, diagrams, tables, and code samples.