Download Mozilla Firefox 4.0 Beta 4

The Mozilla Foundation has released the fourth beta release of version 4.0 of its web browser Firefox. In version 4, the appearance has been overhauled, among other things. For example, the tabs are now placed at the top and there is a Firefox button under Windows Vista and 7, as is also the case for Opera. Furthermore, there is full support for WebM, WebGL and multitouch displays, and support for html5 and css3 has been improved. New in beta 4 is, among other things, that Firefox Sync is included as standard. In addition, javascript animations are faster, tabs can be organized and the number of translations has been further expanded.

What’s New in Firefox 4 Beta (revision 4)

• Firefox 4 Beta 4 is available in 39 languages.
• Firefox Sync is now included by default.
• Users can organize their tabs using Firefox Overview.
• an experimental API is included to provide more efficient Javascript animations.
• Firefox now supports the HTML5 video “buffered” property.
• see the complete changelist from the previous beta.

Developers can find out about all the changes and new features at the Mozilla Developer Center.

The following downloads are available:
Mozilla Firefox 4.0 beta 4 for Windows (English)
Mozilla Firefox 4.0 beta 4 for Linux (English)
Mozilla Firefox 4.0 Beta 4 for Mac OS X (English)
Mozilla Firefox 4.0 Beta 4 for Windows (English)
Mozilla Firefox 4.0 Beta 4 for Linux (English)
Mozilla Firefox 4.0 Beta 4 for Mac OS X (English)

Mozilla Firefox 4.0 beta screenshot, click on the image for a larger version.