Firefox 4 is getting ready to take on the browser war to next level and public beta 2 of the application is now available for download, the new version now supports "App Tab" feature allowing users to have an permanent faviconed tab for websites, powered by the new Gecko 2.0 page-rendering engine the browser now supports even more CSS3 standards specifically "CSS Transitions".

Apart for addressing 652 issues, performance has also been tweaked to offer faster javascript, improved scrolling and better startup times - to test things out without affecting your existing Firefox install you can use the Firefox 4 Beta 2 Portable version download provided below.

Download Firefox 4 Beta 2 :

• Portable
• Regular installer