The add-ons community for Firefox is arguably one of the largest, most vibrant sources for innovation on the Web today. If you want to affect people, to reach them and make a difference in their daily lives, the Firefox add-ons platform is hard to beat, with over one billion installs of Firefox add-ons to date.

However, we’ve only scratched the surface of its potential. Jetpack is a Mozilla Labs project to explore new ways to extend & personalize the Web. In short, Jetpack is an API for allowing you to write Firefox add-ons using the web technologies you already know.

With Jetpack, we’re building upon our experience over the last four years empowering a community of more than 8,000 developers to produce more than 12,000 add-ons to imagine and build the next generation of the add-ons platform. We want to grow our community of developers by orders of magnitude through making add-on creation much more accessible, and yet more powerful by developing it as an extensible platform for innovation itself. Many useful Jetpack Feature’s can be written in under a dozen lines of code.

Specifically, Jetpack will be an exploration in using Web technologies to enhance the browser (e.g. HTML, CSS and Javascript), with the goal of allowing anyone who can build a Web site to participate in making the Web a better place to work, communicate and play.

Most importantly, from a user perspective, Jetpack will allow new features to be added to the browser without a restart or compatibility issues, resulting in little to no disruption to the online experience.

As with all Mozilla Labs initiatives, Jetpack is an open source project and everyone is welcome to participate in its design, development & experimentation.