XUL Benefits
•web application (server-resident) and client application (locally-installable) developers
–easy to build cross-platform, cross-device user interface quickly
–XUL adds common UI metaphors (boxes, springs) that web standards lack
–can build small, powerful, quickly-downloadable application by leveraging power of browser instead of duplicating it
–throw away your books on Windows, Mac, and Motif or GTK UI development: use lightweight web standards and markup languages instead