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Web browser From Wikipedia, the free encyclopedia Page semi-protected Usage share of web browsers according to StatCounter Internet Visualization of Internet routing paths An Opte Project visualization of routing paths through a portion of the Internet General[show] Governance[show] Information infrastructure[show] Services[show] Guides[show] Portal icon Internet portal v t e A web browser (commonly referred to as a browser) is a software application for retrieving, presenting and traversing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier (URI/URL) and may be a web page, image, video or other piece of content.[1] Hyperlinks present in resources enable users easily to navigate their browsers to related resources. Although browsers are primarily intended to use the World Wide Web, they can also be used to access information provided by web servers in private networks or files in file systems. The major web browsers are Firefox, Internet Explorer, Google Chrome, Opera, and Safari.[2][3][4] Contents 1 History 2 Business models 3 Function 4 Features 4.1 User interface 4.2 Privacy and security 4.3 Standards support 4.4 Extensibility 5 Components 6 See also 7 References 8 External links History Main article: History of the web browser The first web browser was invented in 1990 by Sir Tim Berners-Lee. Berners-Lee is the director of the World Wide Web Consortium (W3C), which oversees the Web's continued development, and is also the founder of the World Wide Web Foundation. His browser was called WorldWideWeb and later renamed Nexus.[5] Marc Andreessen, inventor of Netscape The first commonly available web browser with a graphical user interface was Erwise.

The development of Erwise was initiated by Robert Cailliau. In 1993, browser software was further innovated by Marc Andreessen with the release of Mosaic, 'the world's first popular browser',[6] which made the World Wide Web system easy to use and more accessible to the average person. Andreesen's browser sparked the internet boom of the 1990s.[6] The introduction of Mosaic in 1993 – one of the first graphical web browsers – led to an explosion in web use. Andreessen, the leader of the Mosaic team at National Center for Supercomputing Applications (NCSA), soon started his own company, named Netscape, and released the Mosaic-influenced Netscape Navigator in 1994, which quickly became the world's most popular browser, accounting for 90% of all web use at its peak (see usage share of web browsers). Microsoft responded with its Internet Explorer in 1995, also heavily influenced by Mosaic, initiating the industry's first browser war. Bundled with Windows, Internet Explorer gained dominance in the web browser market; Internet Explorer usage share peaked at over 95% by 2002.[7] WorldWideWeb for NeXT, released in 1991, was the first web browser.[8] Opera debuted in 1996; it has never achieved widespread use, having less than 2% browser usage share as of February 2012 according to Net Applications.[9] Its Opera-mini version has an additive share, in April 2011 amounting to 1.1% of overall browser use, but focused on the fast-growing mobile phone web browser market, being preinstalled on over 40 million phones.