Mozilla Firefox 39.0 Beta 6

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Try the best Firefox yet. Mozilla introduces the most customizable Firefox ever with an elegant new design and the first time a 64 bit version has been seen.
Try the best Firefox yet. Mozilla introduces the most customizable Firefox ever with an elegant new design and the first time a 64 bit version has been seen.Mozilla Firefox (known simply as Firefox) is a free and open-source web browser developed for Windows, OS X, and Linux, with a mobile version for Android, by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards.
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