Firefox early version history

Last updated

The project that became Firefox today began as an experimental branch of the Mozilla Suite called m/b (or mozilla/browser). Firefox retains the cross-platform nature of the original Mozilla browser, using the XUL user interface markup language. The use of XUL made 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 (Galeon and Epiphany use GTK+, K-Meleon uses MFC, and Camino uses Cocoa). Many of these projects started before Firefox, and may have served as inspiration.

Contents

Phoenix 0.1, the first official release Phoenix0.1.PNG
Phoenix 0.1, the first official release
Early description of what cookies are in the Preferences window of Mozilla Firefox 0.9.3. This description was soon dropped in later versions. Delicious delicacies-Firefox0.9.3-Knoppix671.png
Early description of what cookies are in the Preferences window of Mozilla Firefox 0.9.3. This description was soon dropped in later versions.

Hyatt, Ross, Hewitt and Chanial [1] developed their browser to combat the perceived software bloat of the Mozilla Suite (codenamed, internally referred to, and continued by the community as SeaMonkey ), which integrated features such as IRC, mail, news, and WYSIWYG HTML editing into one internet suite. After it was sufficiently developed, binaries for public testing appeared in September 2002 under the name Phoenix. This name carried the implication of the mythical firebird that rose triumphantly from the ashes of its dead predecessor, in this case Netscape Navigator which lost the "First browser war" to Microsoft's Internet Explorer. The name Mozilla began as the internal codename for the original 1994 Netscape Navigator browser aiming to displace NCSA Mosaic as the world's most popular web browser. The name for this would-be "Mosaic killer" was meant to evoke the building-crushing Godzilla. [2]

Due to continuing pressure from the Firebird community, [3] on February 9, 2004, the project was renamed again to Mozilla Firefox. [4] The name "Firefox" (a reference to the red panda) [5] was chosen for its similarity to "Firebird", and its uniqueness in the computing industry. To ensure that no further name changes would be necessary, the Mozilla Foundation began the process of registering Firefox [6] as a trademark with the United States Patent and Trademark Office in December 2003. This trademark process led to a delay of several months in the release of Firefox 0.8 when the foundation discovered that Firefox had already been registered as a trademark in the UK [7] for Charlton Company software. [8]

Releases

Firefox

Firefox 1.0, the first release targeted for the general public Mozilla Firefox 1.0 front page screenshot.png
Firefox 1.0, the first release targeted for the general public

Firefox version 1.0 was released on November 9, 2004. [9] The launch of version 1.0 was accompanied by "a respectable amount of pre-launch fervor" [10] including a fan-organized campaign to run a full-page ad in The New York Times .

Although the Mozilla Foundation had intended to make the Mozilla Suite obsolete and replace it with Firefox, the Foundation continued to maintain the suite until April 12, 2006 [11] because it had many corporate users and was bundled with other software. The Mozilla community (as opposed to the Foundation) continues to release new versions of the suite, using the product name SeaMonkey to avoid confusion with the original Mozilla Suite.

Firefox 1.5

"Deer Park", the codename of the Firefox 1.1 and 1.5 Alphas, did not include Firefox branding. Deer Park alpha 1 installation.png
"Deer Park", the codename of the Firefox 1.1 and 1.5 Alphas, did not include Firefox branding.

Firefox 1.5 was released on November 30, 2005. Originally, it was planned to have a version 1.1 at an earlier date as the new Firefox version after 1.0, with development on a later version (1.5) in a separate development branch, but during 2005 both branches and their feature sets were merged (the Mozilla Foundation abandoned the 1.1 release plan after the first two alpha builds), resulting in an official release date between the original dates planned for both versions.

Version 1.5 implemented a new Mac-like options interface, the subject of much criticism from Microsoft Windows and Linux users, with a "Sanitize" action to allow someone to clear their privacy-related information without manually clicking the "Clear All" button. In Firefox 1.5, a user could clear all privacy-related settings simply by exiting the browser or using a keyboard shortcut, depending on their settings. Moreover, the software update system was improved (with binary patches now possible). There were also improvements in the extension management system, with a number of new developer features. In addition, Firefox 1.5 had preliminary SVG 1.1 support. [12]

Behind the screens, the new version resynchronized the code base of the release builds (as opposed to nightly builds) with the core "trunk", which contained additional features not available in 1.0, as it branched from the trunk around the 0.9 release. As such, there was a backlog of bug fixes between 0.9 and the release of 1.0, which were made available in 1.5.

There were also changes in operating system support. As announced on June 23, 2005, by the Mozilla Foundation, Firefox 1.1, which later became 1.5, and other new Mozilla products have no longer supported Mac OS X v10.1, in order to improve the quality of Firefox releases on Mac OS X v10.2 and above. Firefox 1.5 is the final version to support Windows 95.

Alpha builds of Firefox 1.5 (id est, 1.1a1 and 1.1a2) did not carry Firefox branding; they were labelled "Deer Park" (which was Firefox 1.5's internal codename) and contained a different program icon. This was done to dissuade end-users from downloading preview versions, which are intended for developers only.

Firefox 2

Mozilla Firefox 2.0.0.12 running on Ubuntu Wikipedia Main Page in Firefox 2.0.0.12.png
Mozilla Firefox 2.0.0.12 running on Ubuntu

On October 24, 2006, Mozilla released Firefox 2. This version included updates to the tabbed browsing environment, the extensions manager, the GUI (graphical user interface), and the find, search and software update engines. It also implemented a new session restore feature, inline spell checking, and an anti-phishing feature which was implemented by Google as an extension [13] [14] and later merged into the program itself. [15] In December 2007, Firefox Live Chat was launched. It allowed users to ask volunteers questions through a system powered by Jive Software, with guaranteed hours of operation and the possibility of help after hours. [16]

Firefox 2.0.0.20 was the final version that could run under an unmodified installation of Windows NT 4.0, Windows 98, and Windows Me. [17] Subsequently, Mozilla Corporation announced it would not develop new versions of Firefox 2 after the 2.0.0.20 release, but continued Firefox 2 development as long as other programs, such as Thunderbird mail client, depended on it. The final internal release was 2.0.0.22, released in late April 2009.

Firefox 2.0 featured updates to tabbed browsing environment, the extensions manager, the GUI, and the find, search, and software update engines; a new session restore feature; inline spell checking; and an anti-phishing feature which was implemented by Google as an extension, [18] [19] and later merged into the program itself. [20] Mozilla ended support for Firefox 2 on December 18, 2008. [21] As one article noted after the release of Firefox 2.0 in October 2006, "IE6 had the lion's share of the browser market with 77.22%. Internet Explorer 7 had climbed to 3.18%, while Firefox 2.0 was at 0.69%." [22] With support cut at the end of June, Firefox 1.5 dropped to just 2.85%." [22] [23] [24] [25]

Firefox 2.x was end-of-lifed in December 2008. [26] With roughly 26 months of support, only Firefox 3.6 was supported longer. The Gecko 1.8.1 browser core continued to receive patches for projects such as Camino, K-Meleon, and SeaMonkey, even after official Firefox releases had ceased. By 2011, the 1.8.1 core had become obsolete, as major websites dropped support for it [27] by employing newer technologies for presentation and complex scripting. [28] [29] The latter can be resource-intensive with the older core, and users stuck with it should use NoScript [30] to avoid problems with scripts that take too long to process (at the cost of losing some or all site features beyond basic functionality).

Firefox 3

Firefox 3 Strata Aero.png
Windows Vista and Windows 7 "Strata" visual style.
Firefox 3 Strata on 2000.png
Windows 2000 and Windows XP "Strata" visual style.
Firefox 3 Firelight.png
Mac OS X "Firelight" visual style.
Firefox 3 Tango Blubuntu.png
"Tango" visual style for Linux and Unix-like operating systems in Ubuntu. (Icons changed based on applied GTK+ 2 theme.)
Firefox 3.x download manager.png
New Firefox 3 Download Manager in Ubuntu Studio.
Firefox 3 Location Bar.png
New location bar auto-complete feature in Firefox 3.
Mozilla Firefox 3.0 on Ubuntu Mozilla Firefox 3.0 in Ubuntu.png
Mozilla Firefox 3.0 on Ubuntu

Firefox 3 was released on June 17, 2008, [31] [32] 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. [33] Other new features include a redesigned download manager, a new "Places" system for storing bookmarks and history, and separate themes for different operating systems. [34] While the new functionality of the location bar, dubbed the "Awesomebar", was overall well-received, [35] there were those who did not like it due to user interface and performance changes, [36] [37] [38] so much that extensions were made to revert it. [39] [40] Firefox 3 received CNET Editors' Choice in June 2008. [41]

Firefox 3.0 was developed under the codename Gran Paradiso . [42] This, like other Firefox codenames, is the name of an actual place; in this case the seventh-highest mountain in the Graian Alps where they first came up with the idea. Planning began in October 2006, when the development team asked users to submit feature requests that they wished to be included in Firefox 3. [43] This was followed by several more beta releases in spring 2008 culminating in the June release. [44]

World map of all downloads of Mozilla Firefox 3 from June 17, 2008, to July 2, 2008 Firefox 3 Downloads.svg
World map of all downloads of Mozilla Firefox 3 from June 17, 2008, to July 2, 2008

Firefox 3 had more than 8 million unique downloads the day it was released, setting a Guinness World Record. [45] The large number of users attempting to access the Mozilla website on June 17 caused it to become unavailable for at least a few hours, and attempts at upgrading to the new version resulted in server timeouts. The site was not updated for the download of Firefox 3 until 12:00 PDT (19:00 UTC), two hours later than originally scheduled. [46] [47] Gareth Deaves, Records Manager for Guinness World Records, complimented Mozilla, saying, "Mobilizing over 8 million internet users within 24 hours is an extremely impressive accomplishment and we would like to congratulate the Mozilla community for their hard work and dedication." [48]

By July 2008, it held over 5.6% of the recorded usage share of web browsers. [49] Estimates of Firefox 3.0's global market share as of February 2010 were generally in the range of 4–5%, [50] [51] [52] and then dropped as users migrated to Firefox 3.5 and later Firefox 3.6. Partially as a result of this, between mid-December 2009 and the end of January 2010, Firefox 3.5 was the most popular browser (when counting individual browser versions), passing Internet Explorer 7. [53] Mozilla ended support for Firefox 3 on March 30, 2010, with the release of 3.0.19. [54]

Firefox 3.5

Firefox 3.5 on Ubuntu Mozilla Firefox 3.5.png
Firefox 3.5 on Ubuntu

Firefox 3.5 added the Gecko 1.9.1 engine, support for the <video> and <audio> elements defined in the HTML 5 draft specification, a private browsing mode, native support for JSON and web worker threads, multi-touch support, [55] and an updated logo from the previous releases. [56] The default search engine in Russian language builds was changed to Yandex rather than Google, after a survey of Russian Firefox users indicated they preferred Yandex. [57]

Even before the release of Firefox 3.0 on June 17, 2008, Firefox 3.1 was in development under the codename "Shiretoko". [58] It was planned to include new interface features such as tab previews, tag auto-completion, HTML 5 <video> tag support, and CSS text shadows. [59] The first Alpha was released on July 28, 2008 [60] [61] and on October 14, 2008, the first beta of Firefox 3.1 was released. It included a new TraceMonkey JavaScript engine, which is not enabled by default, and the implementation of the W3C Geolocation API. [62]

Estimates of Firefox 3.5's global market share in February 2010 were around 15–20% [63] [64] [65] and rose rapidly in July 2009 as users migrated from Firefox 3.0. From January 2010 it began to decline as users migrated to Firefox 3.6. Between mid-December 2009 and February 2010, Firefox 3.5 was the most popular browser (when counting individual browser versions) according to StatCounter, [66] and as of February 2010 was one of the top 3 browser versions according to Net Applications. [67]

Firefox 3.6

Firefox 3.6 was released in January 2010. The release's main improvement over Firefox 3.5 is improved performance (due to further speed improvements in the TraceMonkey JavaScript engine). It uses the Gecko 1.9.2 engine (compared to 1.9.1 in Fx 3.5), which improves compliance with web standards. It was codenamed Namoroka . [68] In this version, support for X BitMap images was dropped. This release marked the beginning of a new development cycle for Firefox. As well as receiving major updates, the browser also received minor updates with new features. This was to allow users to receive new features more quickly and the dawn of a new roadmap that reflected these changes. [69]

Development for this version started on December 1, 2008. [70] The first alpha of version 3.6 was released on August 7, 2009. [71] The first beta version was released on October 30, [72] followed by Beta 2 on November 10, Beta 3 on November 17, Beta 4 on November 26, and Beta 5 on December 17. [73] Release Candidate 1 was released on January 8, 2010, followed by Release Candidate 2 on January 17. [74] The final version was released on January 21, 2010. Firefox versions 4 through 9 had all reached end-of-life status when Mozilla discontinued support for Firefox 3.6 on April 24, 2012, [75] [76] which at over 27 months of support made it the longest supported version of Firefox, with automatic update to Firefox 12 pushed out to compatible devices by June 2012. [77]

The Firefox developers created a new feature called Lorentz. It is named after the Lorentz National Park. A preview version of Lorentz, Firefox 3.6.3plugin1, was made available on April 8, 2010. [78] Betas of Firefox 3.6.4 were made available starting on April 20, 2010. Firefox 3.6.4 was released on June 22, 2010. [79] [80] The Windows and Linux versions incorporate out-of-process plug-ins (OOPP), which isolates execution of plug-ins (Adobe Flash, Apple QuickTime and Microsoft Silverlight by default) into a separate process. [69] [81] This significantly reduces the number of Firefox crashes experienced by users who are watching online videos or playing games; [82] the user can simply refresh the page to continue. Mozilla states that 30% of browser crashes are caused by third-party plugins. [83]

Firefox 4

Firefox 4.0 displaying Wikipedia on Windows 7 Firefox 4.png
Firefox 4.0 displaying Wikipedia on Windows 7

Firefox 4 was released on March 22, 2011. [84] It brought a new user interface, with a new look designed to make it faster. [85] [86] Early mockups of the new interface on Windows, Mac OS X, and Linux were first made available in July 2009. It was also based on the Gecko 2.0 engine, which added or improved support for HTML5, CSS3, WebM, and WebGL. [87]

Other features were tab groups, improved notifications, "switch to tab" where opened tabs can be searched through the address bar, [88] application tabs, a redesigned add-on manager, integration with Firefox Sync, and support for multi-touch displays. [89] It also added support for the "do not track" header, an emerging standard for Web privacy. [90] The header signals the user's request to the web service that any web visitor tracking service be disabled. In the future, this privacy request may become a legal requirement. [91]

On October 13, 2006, Brendan Eich, Mozilla's then-Chief-Technology-Officer, wrote about the plans for "Mozilla 2", referring to the most comprehensive iteration (since its creation) of the overall platform on which Firefox and other Mozilla products run. [92] Most of the objectives were gradually incorporated into Firefox through versions 3.0, 3.5, and 3.6. The largest changes, however, were planned for Firefox 4.

The first beta was made available on July 6, 2010; Release Candidate 2 (a base for the final version) was released on March 18, 2011. [93] It was codenamed Tumucumaque, and was Firefox's last large release cycle. The Mozilla team planned smaller and quicker releases following other browser vendors. [94] .

On March 22, 2011, and during the 24-hour launch period, Firefox 4 received 7.1 million downloads, as counted and verified by the Mozilla Foundation. [95] Before that date, 3 million people downloaded the second release candidate of the browser, which later became the final version. As a result, the new version of the browser received 10 million downloads on the first day. [96] Notwithstanding, it fell behind the previous record established by the launch of Firefox 3 in 2008, which was 8 million. Second-day downloads for the browser were reported to be 8.75 million, but the lack of an official representative from Guinness to monitor the numbers, made the record attained by Firefox 3 only unofficially been broken. [95]

There was one security update in April 2011 (4.0.1) and version 4 of the browser was made obsolete by the release of Firefox 5 in June 2011. [97]

Firefox 4 represents a departure in user interface layout and behaviour from previous versions. [98] Users face some issues negotiating these changes, some of which are not documented in the release notes. This new feature, called on-demand session restore, overwrites the previous session on exit without prompting. The user can check whether there is a saved session at any time by viewing the History menu item "Restore Previous Session". [99] If it is available (not greyed out) there is a restorable session available. In beta 7 introduced new config option to limit the number of tabs loaded at once during session restore. This also made possible to lazy load tabs, [100] the preferences option to switch this behavior appeared in version 8. [101]

See also

Notes

    References

    1. ↑ "Phoenix 0.1 (Pescadero) release Notes and FAQ". Mozilla. Retrieved October 1, 2012.
    2. ↑ "How Microsoft Attacked the Beast who created Netscape, Mozilla Firefox & invested Skype". March 6, 2013. Retrieved October 21, 2016– via YouTube.
    3. ↑ Festa, Paul (February 10, 2004). "New Mozilla name rises from ashes". CNet News. CBS Interactive. Archived from the original on April 5, 2005. Retrieved April 3, 2011.
    4. ↑ "New Round of Releases Extends Mozilla Project's Standards Based Open Source Offerings". archive.mozilla.org (Press release). Mozilla Foundation. June 13, 2005. Retrieved April 3, 2011.
    5. ↑ "Brand Name Frequently Asked Questions". Archived from the original on February 28, 2012. Retrieved July 28, 2011.
    6. ↑ U.S. Trademark 78,344,043
    7. ↑ UK Trademark 2007607
    8. ↑ Class 09: Computer software for use in managed communications and connectivity. Class 42: Computer consultancy services; licensing and rental of computer software; design and development of computer software; maintenance, installation and up-dating of computer software; advisory services relating to computer programs and software
    9. ↑ "Mozilla Firefox 1.0 Release Notes". Mozilla. November 9, 2004. Retrieved June 13, 2012.
    10. ↑ "Firefox browser takes on Microsoft". BBC News. November 9, 2004. Retrieved June 13, 2012.
    11. ↑ "Sunset Announcement for Fx/Tb 1.0.x and Mozilla Suite 1.7.x". Mozilla Developer News » Blog Archive ». Mozilla Developer Network. April 12, 2006. Retrieved August 6, 2009.
    12. ↑ as shown in Mozilla's Bugzilla database
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    14. ↑ "Phishing Protection Design Documentation — Background". Mozilla wiki. Retrieved January 24, 2007.
    15. ↑ "Mozilla Firefox 2 Release Notes". Mozilla Corporation. Retrieved December 19, 2006.
    16. ↑ "Firefox Support Blog » Blog Archive » Firefox Live Chat launching today". The Mozilla Blog. December 28, 2007. Retrieved December 19, 2009.
    17. ↑ "Hello! Prompt, please, what of the previous versions Firefox can be established on old system Windows NT4, Thanks. | Firefox Support Forum | Mozilla Support". support.mozilla.org. Retrieved June 23, 2022.
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    19. ↑ Mozilla.org wiki contributors. "Phishing Protection Design Documentation - Background". Mozilla.org wiki. Retrieved January 24, 2007.{{cite web}}: |author= has generic name (help)
    20. ↑ "Mozilla Firefox 2 Release Notes". Mozilla Corporation. Retrieved December 19, 2006.
    21. ↑ "Firefox 2.0.0.20 now available for download". Mozilla Corporation. Retrieved January 8, 2009.
    22. 1 2 Marius Nestor (February 5, 2008). "IE7 and Firefox 2.0 Are Slaughtering Internet Explorer 6 - Out with the old, in with the new". Softpedia. Retrieved March 31, 2008.
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    28. ↑ "Modern browsers for modern applications". Official Google Enterprise Blog. Blogger. January 29, 2010. Retrieved September 2, 2012. Firefox 3.0 or newer listed.
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    30. ↑ "Direct download". get it!. noscript.net. 2012. Retrieved September 2, 2012. The latest legacy NoScript version for Firefox 2.0 and SeaMonkey 1.1 is 1.10
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    33. ↑ "Firefox 3 for developers". Mozilla Developer Center. July 17, 2007. Archived from the original on November 13, 2008. Retrieved July 17, 2007.
    34. ↑ "Firefox 3: Tango, Strata, Firelight". Mozilla Links. May 2008. Archived from the original on August 10, 2010. Retrieved July 11, 2025.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
    35. ↑ Seltzer, Larry (June 18, 2008). "First Impressions of Firefox 3". Ziff Davis Enterprise Holdings. Retrieved August 8, 2008.
    36. ↑ Muchmore, Michael (July 30, 2008). "Firefox Alpha Improves the AwesomeBar". pcmag. Retrieved October 9, 2008.
    37. ↑ Brinkmann, Martin (June 14, 2008). "Firefox 3 Location Bar Controversy" . Retrieved August 8, 2008.
    38. ↑ ""AwesomeBar" is totally NOT awesome". MozillaZine. Retrieved August 8, 2008.
    39. ↑ Spitzer, Seth (February 14, 2008). "oldbar :: Firefox Add-ons". Mozilla. Archived from the original on June 24, 2011. Retrieved August 8, 2008.
    40. ↑ "Old Location Bar :: Firefox Add-ons". Mozilla. June 19, 2008. Archived from the original on October 17, 2012. Retrieved August 8, 2008.
    41. ↑ "Firefox 3 Browser reviews – CNET Reviews" . Retrieved July 18, 2008.
    42. ↑ "Gecko 1.9/Firefox 3 ("Gran Paradiso") Planning Meeting, Wednesday Jun 7, 11:00 am". June 2, 2006. Retrieved November 9, 2010.
    43. ↑ Reimer, Jeremy (October 13, 2006). "Firefox accepting feature suggestions for version 3". Arstechnica.com. Retrieved February 5, 2007.
    44. ↑ Beltzner, Mike. "Firefox 3 Beta 2 now available for download". Mozilla Developer News. Retrieved December 20, 2007.
    45. ↑ Montalbano, Elizabeth (June 18, 2008). "Mozilla Logs 8 Million-plus Firefox 3 Downloads in a Day". PC World. Archived from the original on December 31, 2018. Retrieved April 30, 2009. See also: Montalbano, Elizabeth (May 28, 2008). "Mozilla Shooting for Record Books With Firefox 3 Release". PC World. Archived from the original on December 31, 2018. Retrieved April 30, 2009.
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    71. ↑ "Firefox 3.6 Alpha 1 now available for download". Mozilla Developer Center. August 7, 2009. Retrieved August 7, 2009.
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    73. ↑ "Mozilla Firefox 3.6 Beta 5 Release Notes". Mozilla.com. December 17, 2009. Retrieved January 5, 2010.
    74. ↑ "Mozilla Firefox 3.6 Release Candidate 1 Release Notes". Mozilla. January 8, 2010. Retrieved January 16, 2010.
    75. ↑ Upcoming Firefox Support Changes, March 23, 2012
    76. ↑ "Extended Support Proposal". Mozilla Wiki. Retrieved November 9, 2011.
    77. ↑ "Firefox 3.6 will automatically update to Firefox 12". Mozilla Support. Retrieved June 7, 2012.
    78. ↑ "Firefox 3.6.4 beta available for download and testing". Mozilla. April 20, 2010. Retrieved May 10, 2010.
    79. ↑ Tristan (May 21, 2010). "Frogs, stability and performance". Archived from the original on July 23, 2012. Retrieved May 21, 2010.
    80. ↑ "Firefox 3.6 Release Notes". Mozilla Foundation. June 22, 2010. Retrieved September 8, 2010.
    81. ↑ "Chrome gets updated, Firefox 'Lorentz' enters beta". Archived from the original on October 4, 2012. Retrieved April 21, 2010.
    82. ↑ Beltzner, Mike. "Firefox 3.6.4 with Crash Protection Now Available :: The Mozilla Blog". Blog.mozilla.com. Retrieved November 9, 2010.
    83. ↑ "Plugin Checker Launched " Mozilla Webdev". Blog.mozilla.com. October 13, 2009. Retrieved November 9, 2010.
    84. ↑ Fiveash, Kelly (March 21, 2011). "Firefox 4 gets yet another final test build release". The Register . Archived from the original on March 8, 2018.
    85. ↑ "Mozilla spills plan for, yes, Firefox 4". The Register. May 10, 2010. Retrieved May 3, 2019.
    86. ↑ Metz, Cade (May 10, 2010). "Mozilla spills plan for, yes, Firefox 4". The Register . Archived from the original on July 29, 2018. Retrieved May 10, 2010.
    87. ↑ Beltzner, Mike (May 10, 2010). "Firefox 4: fast, powerful, and empowering" . Retrieved May 10, 2010.
    88. ↑ Shankland, Stephen (August 19, 2010). "Firefox 4 beta 4 adds hardware acceleration". CNET. Retrieved September 9, 2021.
    89. ↑ Shankland, Stephen (May 28, 2010). "Mozilla prepares coders for Firefox 4 features". c|net. Retrieved May 28, 2010.
    90. ↑ Mossberg, Walter S. (March 31, 2011). "New, Lean Firefox 4: Re-Built to Play Catch-Up". The Wall Street Journal . Retrieved March 31, 2011.
    91. ↑ Valentino-DeVries, Jennifer (March 14, 2011). "Firefox Maker: 'Do Not Track' Likely to Be Regulated". Digits. The Wall Street Journal . Retrieved March 31, 2011.
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