Applications
Games, Sidebar Panels, Tools, ActiveState Komodo, Link Toolbar, mozdev.org, Mozilla Amazon Browser (MAB), Mozilla XUL Runtime Project, Preferences Toolbar for Mozilla, Venkman Project Page, XMLterm, XUL Applications, ZopeStudio
FAQs, Help, and Tutorials
A XUL Bestiary, An XBL Primer, Fooling with XUL, How to create In-memory RDF from remote XML, InformIT.com - An Introductory Tour of Mozilla&apo, Introduction to XUL, Mozilla XUL Project, My Chrome Oven: Generating XUL with Python, Writing a XUL Application, XUL Event Propagation
Presentations
A Taste of XUL, Fabula: bi-lingual, multi-media, children's s, Mozilla at the O'Reilly OSS Convention, Writing a Mozilla Application with XUL and Javascr
Essential XUL Programming
Online companion site to the book, from Wiley, by Vaughn Bullard and Kevin T. Smith. Includes chapter overview, code samples, and errata.
Extensible User Interface Language
Index of articles on XUL. (Oasis)