Mozilla (www.mozilla.org) is an Open Source toolset that programmers can use to rapidly develop user-oriented software applications without having to suffer restrictions of HTML-based Web development. It's an innovative interpretation of XML, JavaScript and component technologies, conveniently bundled together. Simply put, Mozilla is to Linux what Visual Basic is to Windows: an entry-level tool that can do simple jobs fast. This latest book in Bruce Perens' Open Source Series provides a clear, complete and easy-to-absorb introduction to Mozilla and its related technologies: XUL, XBL and XPCOM, and takes a competent programmer from zero to full understanding. Packed with screenshots, code fragments and shorter code listings, you'll learn a new, efficient development process and trend for UIs and how to create "thick client" UIs with Mozilla technology. Learn to translate basic HTML and programming skills into a new, simple system for software development and produce quick and portable user-oriented software systems. Note - there are one million users, thousands of mozilla.org contributors, and hundreds of Netscape engineers behind Mozilla.