Firefox has today released the most awaited 4.0 versions beta copy which gives you a long list of special features and better screen area. After making a Guiness book of world record past year for the most downloads in the single day, it seems like the open source software Firefox is going to break their own records with a new interface and features. You will get getting a separate platform for extensions, minimal browser UI and desktop integration objectives along with lower memory resource usage.Some of the best features include Prism, Weave & Geode.
Here are the direct download links :