page_title: Firefox early version history
section_title: Firefox 3
hierarchical_section_title: Firefox early version history / Firefox 3
caption_attribution_description: Mozilla Firefox version 3 displaying the Wikipedia Main Page
context_page_description: The project that became Firefox today began as an experimental branch of the Mozilla Suite called m/b. Firefox retains the cross-platform nature of the original Mozilla browser, using the XUL user interface markup language. The use of XUL makes it possible to extend the browser's capabilities through the use of extensions and themes. The development and installation processes of these add-ons raised security concerns, and with the release of Firefox 0.9, the Mozilla Foundation opened a Mozilla Update website containing "approved" themes and extensions. The use of XUL sets Firefox apart from other browsers, including other projects based on Mozilla's Gecko layout engine and most other browsers, which use interfaces native to their respective platforms. Many of these projects started before Firefox, and probably served as inspiration.
context_section_description: Firefox 3 was released on June 17, 2008, by the Mozilla Corporation. Firefox 3 uses version 1.9 of the Mozilla Gecko layout engine for displaying web pages. This version fixes many bugs, improves standard compliance, and implements new web APIs. Other new features include a redesigned download manager, a new "Places" system for storing bookmarks and history, and separate themes for different operating systems.
  Development stretches back to the first Firefox 3 beta (under the codename 'Gran Paradiso') which had been released several months earlier on November 19, 2007, and was followed by several more beta releases in spring 2008 culminating in the June release. Firefox 3 had more than 8 million unique downloads the day it was released, setting a Guinness World Record.
caption: Mozilla Firefox 3.0 on Ubuntu
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