The Fastest Firefox Yet
Things move quickly online, and we’ve beefed up the engine that runs Firefox to make sure you can keep up: Firefox 3.5 is more than twice as fast as Firefox 3, and ten times as fast as Firefox 2.* As a result, Web applications like email, photo sites and your favorite social networks will feel snappier and more responsive.
Web Developer Features
Open Video and Audio
Firefox 3.5 supports cross-site XMLHttpRequests, which means your Web applications can now access material from other servers (as long as the servers are configured to allow it), thus paving the way for new mashups and other online collaborations.
In Firefox 3.5, users can share their location with requesting websites, allowing developers to customize their applications so they deliver more useful, more relevant output.