A browser war is competition for dominance in the usage share of web browsers. The First Browser War was Microsoft's Internet Explorer against Netscape's Navigator during the late 1990s. Browser wars continued with the decline of Internet Explorer's market share since 2003 and the increasing popularity of browsers including Mozilla Firefox, Google Chrome, Safari, and Opera.
In more recent years, the introduction of HTML5, CSS 3, and extensive client-side scripting to the World Wide Web, as well as more widespread use of smartphones and other mobile devices for browsing the web, have added new browsers, ensuring that browser battles continue. Browser vendors also fought a format war over which codecs are used for the HTML5 video and audio elements.
The World Wide Web is an Internet-based hypertext system invented in the late 1980s and early 1990s by Tim Berners-Lee. Berners-Lee wrote the first web browser WorldWideWeb, later renamed Nexus, and released it for the NeXTstep platform in 1991.
By the end of 1992 other browsers had appeared, many of them based on the libwww library. These included Unix browsers such as Line Mode Browser, ViolaWWW, Erwise, and MidasWWW, and MacWWW/Samba for the Mac. Even though these browsers tended to be simple HTML viewers, relying on external helper applications to view multimedia content, they provided choice to users both in browsers and platforms.
Further browsers were released in 1993, including Cello, Arena, Lynx, tkWWW, and Mosaic. The most influential of these was Mosaic, a multiplatform browser developed at National Center for Supercomputing Applications (NCSA). By October 1994, Mosaic was "well on its way to becoming the world's standard interface", according to Gary Wolfe of Wired.
Several companies licensed Mosaic to create their own commercial browsers, such as AirMosaic and Spyglass Mosaic. One of the Mosaic developers, Marc Andreessen, founded Mosaic Communications Corporation and created a new web browser named Mosaic Netscape.
There are two ages of the Internet - before Mosaic, and after. The combination of Tim Berners-Lee's Web protocols, which provided connectivity, and Marc Andreesen's browser, which provided a great interface, proved explosive. In twenty-four months, the Web has gone from being unknown to absolutely ubiquitous.
To resolve legal issues with NCSA, the company was renamed Netscape Communications Corporation and the browser Netscape Navigator. The Netscape browser improved on Mosaic's usability and reliability and was able to display pages as they loaded. By 1995, helped by the fact that it was free for non-commercial use, the browser dominated the emerging World Wide Web.
First Browser War
By mid-1995 the World Wide Web had received a great deal of attention in popular culture and the mass media. Netscape Navigator was the most widely used web browser and Microsoft had licensed Mosaic to create Internet Explorer 1.0, which it had released as part of the Microsoft Windows 95 Plus! Pack in August.
Internet Explorer 2.0 was released as a free download three months later. Unlike Netscape Navigator it was available to all Windows users for free, even commercial companies. Other companies later followed and gave their browsers away for free. Both Netscape Navigator and competitor products like InternetWorks, Quarterdeck Browser, InterAp, and WinTapestry were bundled with other applications to full Internet suites. New versions of Internet Explorer and Netscape (branded as Netscape Communicator) were released at a rapid pace over the following few years.
Internet Explorer began to approach feature parity with Netscape with version 3.0 (1996), which offered scripting support and the market's first commercial Cascading Style Sheets (CSS) implementation.
In October 1997, Internet Explorer 4.0 was released. The release party in San Francisco featured a ten-foot-tall letter "e" logo. Netscape employees showing up to work the following morning found the giant logo on their front lawn, with a sign attached that read "From the IE team ... We Love You". The Netscape employees promptly knocked it over and set a giant figure of their Mozilla dinosaur mascot atop it, holding a sign reading "Netscape 72, Microsoft 18" representing the market distribution.
Internet Explorer 4 changed the tides of the browser wars. It was integrated into Microsoft Windows, which gave it a large installation base.
During these releases, it was common for web designers to display 'best viewed in Netscape' or 'best viewed in Internet Explorer' logos. These images often identified a specific browser version and were commonly linked to a source from which the stated browser could be downloaded. These logos generally recognized the divergence between the standards supported by the browsers and signified which browser was used for testing the pages. In response, supporters of the principle that web sites should be compliant with World Wide Web Consortium standards and hence viewable with any browser started the "Viewable With Any Browser" campaign, which employed its own logo similar to the partisan ones.
Internet Explorer 5 & 6
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Microsoft had three strong advantages in the browser wars.
One was resources: Netscape began with about 80% market share and a good deal of public goodwill, but as a relatively small company deriving the great bulk of its income from what was essentially a single product (Navigator and its derivatives), it was financially vulnerable. Netscape's total revenue never exceeded the interest income generated by Microsoft's cash on hand. Microsoft's vast resources allowed them to make IE available without charge, as the enormous revenues from Windows were used to fund its development and marketing. Netscape was commercial software for businesses but provided free for home and educational use; Internet Explorer was provided free for all Windows and Macintosh users, cutting off a significant revenue stream: As it was told by Jim Barksdale, President and CEO of Netscape Communications: "Very few times in warfare have smaller forces overtaken bigger forces...".
Another advantage was that Microsoft Windows had over 90% share of the desktop operating system market. Internet Explorer was bundled with every copy of Windows, therefore Microsoft was able to dominate the market share easily as customers had it as the default browser. In this time period, many new computer purchases were first computer purchases for home users or offices, and many of the users had never extensively used a web browser before, so had nothing to compare with and little motivation to consider alternatives; the great set of abilities they had gained with access to the Internet and the World Wide Web made any difference in browser features or ergonomics pale in comparison.
During the United States Microsoft antitrust case in 1998, Intel vice president Steven McGeady, a witness called by the government, said on the stand that a senior executive at Microsoft told him in 1995 of his company's intention to "cut off Netscape's air supply". A Microsoft attorney said that McGeady's testimony is not credible. That same year, Netscape, the company, was acquired by America Online for US$4.2 billion. Internet Explorer became the new dominant browser, attaining a peak of about 96% of the web browser usage share during 2002, more than Netscape had at its peak.
The first browser war ended with Internet Explorer having no remaining serious competition for its market share. This also brought an end to the rapid innovation in web browsers; until 2006 there was only one new version of Internet Explorer since version 6.0 had been released in 2001. Internet Explorer 6.0 Service Pack 1 was developed as part of Windows XP Service Pack 1 and was also integrated into Windows Server 2003. Further enhancements were made to Internet Explorer in Windows XP Service Pack 2 (released in 2004), including a pop-up blocker and stronger default security settings regarding the installation of ActiveX controls.
Second Browser War
At the start of Navigator's decline, Netscape open-sourced their browser code, and later entrusted it to the newly formed non-profit Mozilla Foundation—a primarily community-driven project to create a successor to Netscape. Development continued for several years with little widespread adoption until a stripped-down browser-only version of the full suite, which included new features such as a separate search bar (which had previously only appeared in the Opera browser), was created. The browser-only version was initially named Phoenix, but because of trademark issues that name was changed, first to Firebird, then to Firefox. This browser became the focus of the Mozilla Foundation's development efforts and Mozilla Firefox 1.0 was released on November 9, 2004. It then continued to gain an increasing share of the browser market until a peak in 2010, after which it has remained largely stable.
In 2003, Microsoft announced that Internet Explorer 6 Service Pack 1 would be the last standalone version of its browser. Future enhancements would be dependent on Windows Vista, which would include new tools such as the WPF and XAML to enable developers to build web applications.
In response, in April 2004, the Mozilla Foundation and Opera Software joined efforts to develop new open technology standards which add more capability while remaining backward-compatible with existing technologies. The result of this collaboration was the WHATWG, a working group devoted to the fast creation of new standard definitions that would be submitted to the W3C for approval.
Updated browsers released
On February 15, 2005, Microsoft announced that Internet Explorer 7 would be available for Windows XP SP2 and later versions of Windows by mid-2005. The announcement introduced the new version of the browser as a major upgrade over Internet Explorer 6 SP1.
Opera had been a long-time small player in the browser wars, known for introducing innovative features such as tabbed browsing and mouse gestures, as well as being lightweight but feature-rich. The software, however, was commercial, which hampered its adoption compared to its free rivals until 2005, when the browser became freeware. On June 20, 2006, Opera Software released Opera 9 including an integrated source viewer, a BitTorrent client implementation, and widgets. It was the first Windows browser to pass the Acid2 test. Opera Mini, a mobile browser, has significant mobile market share. Editions of Opera are also available for the Nintendo DS and the Wii.
Microsoft released Internet Explorer 7 on October 18, 2006. It included tabbed browsing, a search bar, a phishing filter, and improved support for web standards (including full support for PNG) — all features already long familiar to Opera and Firefox users. Microsoft distributed Internet Explorer 7 to genuine Windows users (WGA) as a high-priority update through Windows Update. Typical market share analysis showed only a slow uptake of Internet Explorer 7 and Microsoft decided to drop the requirement for WGA and made Internet Explorer 7 available to all Windows users in October 2007. Throughout the two following years, Microsoft worked on Internet Explorer 8. On December 19, 2007, the company announced that an internal build of that version had passed the Acid2 CSS test in "IE8 standards mode" — the last of the major browsers to do so. Internet Explorer 8 was released on March 19, 2009. New features included accelerators, improved privacy protection, a compatibility mode for pages designed for older browsers, and improved support for various web standards. It was the last version of Internet Explorer to be released for Windows XP. Internet Explorer 8 scored 20/100 in the Acid3 test, which was much worse than all major competitors at the time.
On October 24, 2006, Mozilla released Mozilla Firefox 2.0. It included the ability to reopen recently closed tabs, a session restore feature to resume work where it had been left after a crash, a phishing filter, and a spell-checker for text fields. Mozilla released Firefox 3.0 on June 17, 2008, with performance improvements and other new features. Firefox 3.5 followed on June 30, 2009, with further performance improvements, native integration of audio and video, and more privacy features.
On December 28, 2007, Netscape announced that support for its Mozilla-derived Netscape Navigator would be discontinued on February 1, 2008, suggesting its users migrate to Mozilla Firefox. However, on January 28, 2008, Netscape announced that support would be extended to March 1, 2008, and mentioned Flock alongside Firefox as alternatives to its users.
During December 2009 and January 2010, StatCounter reported that its statistics indicated that Firefox 3.5 was the most popular browser, when counting individual browser versions, passing Internet Explorer 7 and 8 by a small margin. This was the first time a global statistic has reported that a non-Internet Explorer browser version had exceeded the top Internet Explorer version in usage share since the fall of Netscape Navigator. This feat, which GeekSmack called the "dethron[ing of] Microsoft and its Internet Explorer 7 browser," could largely be attributed to the fact that it came at a time when version 8 was replacing version 7 as the dominant Internet Explorer version. No more than two months later Internet Explorer 8 had established itself as the most popular browser version, a position which it still held as of March 2011. It should also be noted that other major statistics, such as Net Applications, never reported any non-Internet Explorer browser version as having a higher usage share than the most popular Internet Explorer version, although Firefox 3.5 was reported as the third most popular browser version between December 2009 and February 2010, to be replaced by Firefox 3.6 since April 2010, each ahead of Internet Explorer 7 and behind Internet Explorer 6 and 8.
HTML5 beginnings and Presto rendering engine deprecation
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In October 2010, StatCounter reported that Internet Explorer had for the first time dropped below 50% market share to 49.87% in their figures. Also, StatCounter reported Internet Explorer 8's first drop in usage share in the same month.
Google released Google Chrome 9 on February 3, 2011. New features introduced included support for WebGL, Chrome Instant, and the Chrome Web Store. The company created another seven versions of Chrome that year, finishing with Chrome 16 on December 15, 2011. The first version of Chrome available to the public in 2012 was Chrome 17, which was released on February 15, 2012. In April 2012, Google browsers (Chrome and Android) became the most used browsers on Wikimedia sites. By May 21, 2012, StatCounter reported Chrome narrowly overtaking Internet Explorer as the most used browser in the world. However, troughs and peaks in the market share between Internet Explorer and Chrome meant that Internet Explorer was slightly ahead of Chrome on weekdays up until July 4. At the same time, Net Applications reported Internet Explorer firmly in first place, with Google Chrome almost overtaking Firefox as the second.
Microsoft released Internet Explorer 9 on March 14, 2011. It featured a revamped interface, support for the basic SVG feature set, and partial HTML5 video support, among other new features. It only runs on Windows Vista, Windows 7, and Windows Phone 7. The company later released Internet Explorer 10 along with Windows 8 and Windows Phone 8 in 2012, and an update compatible with Windows 7 followed in 2013. This version drops Vista and Phone 7 support. The release preview of Internet Explorer 11 was released on September 17, 2013. It supports the same desktops as its predecessor.
The concept of rapid releases established by Google Chrome prompted Mozilla to do the same for its Firefox browser. On June 21, 2011, Firefox 5.0 was the first rapid release for this browser, finished a mere six weeks after the previous edition. Mozilla created four more whole-number versions throughout the year, finishing with Firefox 9 on December 20, 2011. For those desiring long term support, Mozilla made an Extended Support Release (ESR) version of Firefox 10 on January 31, 2012. Contrary to the regular version, a Firefox ESR receives regular security updates plus occasional new features and performance updates for approximately one year, after which a 12-week grace period is given before discontinuing that version number. Those who continued to use the rapid releases with an active Internet connection were automatically updated to Firefox 11 on March 15, 2012.
During this era, all major web browsers implemented support for HTML5 video. Supported codecs, however, varied from browser to browser. Current versions of Android, Chrome, and Firefox support Theora, H.264, and the VP8 version of WebM. Older versions of Firefox omitted H.264 due to it being a proprietary codec, but it was made available beginning in version 17 for Android and version 20 for Windows. Internet Explorer and Safari support H.264 exclusively, but the Theora and VP8 codecs can be manually installed on the desktop versions.
Given the popularity of WebKit for mobile browsers, Opera Software discontinued its own Presto engine in February 2013. The Opera 12 series of browsers were the last to use Presto with its successors using WebKit instead.
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- Browser Statistics – Month by month comparison spanning from 2002 and onward displaying the usage share of browsers among web developers
- Browser Stats – Chuck Upsdell's Browser Statistics
- Browser Stats – Net Applications' Browser Statistics
- StatCounter Global Stats – tracks the market share of browsers including mobile from over 4 billion monthly page views
- Browser war, RIA and future of web development
- Browser Wars II: The Saga Continues – an article about the development of the browser wars
- Web Browsers' War – 2012 – An article about web browsers' war in 2012
- Thomas Haigh, "Protocols for Profit: Web and Email Technologies as Product and Infrastructure" in The Internet & American Business, eds. Ceruzzi & Aspray, MIT Press, 2008– business & technological history of web browsers, online preprint
- stephenbrooks.org – browserwars – a multiplayer browser game, shows the logo of the browsers used
- Browser Market Share – current market share of browsers and their versions, desktop and mobile