XUL and Standards
•Is XUL a standard? No. It’s an XML application Netscape invented. (Plan to submit for standardization in the future.)
•Does XUL duplicate or compete with web standards? No. It answers a question no web standard now does: “How can you define a desktop application UI using standards?”
•XUL uses XML as it was intended—as a way to define new markup languages (XML applications) for specific purposes.