Firefox 21 21.0 freeware

Bringing together all kinds of awesomeness to make browsing better for you.

The Firefox browser is created by Mozilla, a non-profit organization whose mission is to promote openness, innovation and opportunity on the Web.

Author Mozilla Foundation
Released 2013-05-14
Filesize 20.30 MB
Downloads 611
OS Windows XP, Windows Vista, Windows Vista x64, Windows 7, Windows 7 x64, Windows 8, Windows 8 x64
Installation Instal And Uninstall
Keywords firefox, internet explorer, mozilla, mozilla explorer, mozilla firefox, internet browser, Mozilla browser, web browser, browser, internet
Users' rating
(4 rating)
Firefox 21BrowsersWindows XP, Windows Vista, Windows Vista x64, Windows 7, Windows 7 x64, Windows 8, Windows 8 x64
Firefox 21 - Freeware Download Notice

Firefox 21 Free Download - we do not host any Firefox 21 torrent files or links of Firefox 21 on,, etc. All Firefox 21 download links are direct Firefox 21 download from publisher site or their selected mirrors.

Firefox 21 freeware - The Latest User Reviews
Firefox 21 freeware - The Latest Versions History
21.0 May 14, 2013 New Release # NEW The Social API now supports multiple providers
# NEW Enhanced three-state UI for Do Not Track (DNT)
# NEW Firefox will suggest how to improve your application startup time if needed
# NEW Preliminary implementation of Firefox Health Report
# CHANGED Ability to restore removed thumbnails on New Tab Page
# CHANGED CSS -moz-user-select:none selection changed to improve compatibility with -webkit-user-select:none (bug 816298)
# CHANGED Graphics related performance improvements (bug 809821)
# CHANGED Removed E4X support from Spidermonkey
# DEVELOPER Implemented Remote Profiling
# DEVELOPER Integrated add-on SDK loader and API libraries into Firefox
# HTML5 Added support for <main> element
# HTML5 Implemented scoped stylesheets
# FIXED Some function keys may not work when pressed (833719)
# FIXED Browsing and Download history clearing needs unification to avoid confusion on clearing download history (847627)
21.0b7 May 9, 2013 New Release
21.0b6 May 3, 2013 New Release

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