What is the Jetpack SDK? The Jetpack SDK is a set of tools from Mozilla Labs that enables anyone who knows HTML, CSS, and JavaScript to create powerful Firefox add-ons. Our goal is to allow anyone who can build a Web site to participate in making the Web
Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.
