eXML:

• The eXML homepage
• The Sourceforge eXML Project Website

Eiffel:

• A Good Page To Get Started With Eiffel
• ISE Eiffel
• SmallEiffel
• Visual Eiffel
• ISS Base
• Eiffel Forum
• Non Commercial Consortium For Eiffel

XML:

• W3C XML 1.0 specification
• W3C XML 1.0 annotated specification
• W3C DOM Level 1 specification

Expat:

• (New) Expat Homepage
• (Old) Expat Homepage
• Very Good Introduction To Expat
• Latest Stable Expat Version (in use by eXML)
• Latest Unstable Expat Version