a browser is a software application used to locate, retrieve and display content on the World Wide Web, including Web pages, images, video and other files. As a client /server model, the browser is the client run on a computer that contacts the Web server and requests information. The Web server sends the information back to the Web browser which displays the results on the computer or other Internet-enabled device that supports a browser.
Internet Explorer
A Web browser that made its debut in 1995 as Microsoft's response to Netscape, one of the first graphical-based Web browsers and, at the time, the dominant browser in use with control of over 90 percent of the market. Initially called Microsoft Internet Explorer (MSIE), Internet Explorer(IE) has long held the title of most popular browser in use, despite strong competition from the likes of Mozilla Firefox, Apple's Safari,Opera and Google Chrome.As with most modern browsers, Internet Explorer supports Java,JavaScript, ActiveX, RSS, CSS and Ajax, while also offering features like tabbed browsing, private browsing, and built-in malware and phishing protection.Firefox
Firefox is a free, open source Web browser for Windows, Linux andMac OS X. It is based on the Mozilla code base and offers customization options and features such as its capability to blockpop-up windows, tabbed browsing, privacy and security measures, smart searching, and RSS live bookmarks.Google Chrome
An Internet browser developed by Google Inc. that combines a minimal design with sophisticated technology to make the Web faster, safer and easier. The Google Chrome browser offers features including access to favorite pages instantly with thumbnails, desktop shortcuts to launch Web applications, and independently run tabs within the browser to prevent browser crashing. Chrome browser is available for Windows Vista and Windows XP SP2.Safari
Apple Safari is a Web browser available for the Macintosh and Windows operating systems as well as the iPhone, iPod Touch and iPad. Safari has been designed based on the premise that the most useful browser is one that "gets out of your way and lets you simply enjoy the Web."At the heart of Apple's Safari browser is the Web Kit engine, which is responsible for functions like displaying graphics, rendering fonts, running Java script and determining page layout. Future versions of Safari are expected to use Apple's Web Kit 2 engine, which features a split process model built directly into the framework that enables Web browser processes to run as separate processes in the operating system for improved stability and security.
Safari currently occupies the fourth position in the browser market behind Microsoft's Internet Explorer, Mozilla Firefox and Google Chrome.
Opera
A Web browser developed in 1994 by Norwegian company Telenor. Opera is boasted as being the speediest and most standards-compliant of the current browsers in use, supporting such standards as 128-bit encryption, SSL2 and 3, CSS1, partial CSS2, XML, HTML and JavaScript. Opera is available for use with the BeOS, EPOC, Linux, Symbian, OS/2, Windows and Mac operating systems.source: www.webopedia.com
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