Firefox 4 Available for Download

March 22, 2011 by | Comments

Despite being available since yesterday via FTP, Mozilla’s team announced Firefox 4 final version availability for Windows, Mac OS X and Linux in more than 80 languages.

According to Mozilla’s Team, Firefox 4 is the fastest Firefox yet; improvements are claimed to be achieved particularly in the performance segment: FF4 now is between two and six times faster than previous releases.

A new JavaScript engine, a new look that lets Web content take center stage, new features like App Tabs and Panorama, Firefox Sync gives users access to their Awesome Bar history, bookmarks, open tabs and passwords across computers and mobile device, and support for HTML5 has been included too.


  • “Do Not Track”, a feature that allows users to opt-out of tracking used for behavioral advertising, and
  • HTTP Strict Transport Security (HSTS), plus Content Security Policy (CSP) ensure a safer and more private experience.

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