"Jetpack was officially announced last week and is
already generating downloads and new add-ons for Mozilla. Jetpack
is intended to make add-on development faster and easier using
common HTML Web developer skills. While some might see it as
potentially competitive with other mechanisms for building and
manipulating add-ons, Mozilla sees Jetpack as a new way to extend
the brower and the Web experience itself.
""With more than 25,000 downloads of Jetpack and nearly 100,000
watches of the tutorial movie, we've seen significant interest in
Jetpack, especially from the Web developer world," Aza Raskin, head
of User Experience for Mozilla, told InternetNews.com. "In the few
days since launch, we've had over 20 Firefox extensions written by
people who previously had only written Web sites.""