Mozilla development team has released the forth beta of its Firefox 4. Similar to previous version, the latest release of the Firefox 4 beta 4 is also built on Mozilla’s Gecko 2.0 Web platform. The new release has been featured with Firefox Sync and Firefox Panorama for allow users to control their personal Web experience by syncing their data across devices and organize their tabs in order.

The Firefox 4 beta 4 includes the following new features and improvements:

  • Firefox Sync – Makes bookmarks, history, Awesome Bar, passwords, form-fill data and open tabs accessible across multiple computers and mobile devices.
  • Firefox Panorama (formerly known as Tab Candy) – Gives users a visual overview of all open tabs, allowing them to be sorted and grouped.
  • Firefox 4 Beta 4 is available in 39 languages.
  • An Experimental API – Provide more efficient Javascript animations.
  • Supports HTML5 video “buffered” property.

The latest Firefox 4 beta 4 is now available for free download at Mozilla official site. Just head to the following URL to access official Firefox 4 beta 4 download:

Windows (English)-
Linux (English) –
Mac OS X (English) –

Other localized versions can be downloading from here.

Update: Firefox 4 Beta 5