Over the last few years,Web Browsers have come a long way from the days of the first internet web browser, Mosaic and the like. The monopoly of the Microsoft-authored Internet Explorer has been decisively broken and terminated possibly, forever. Web browsers today have progressed from being a mere internet-exploring tool to being a multi-purpose, multi-pronged application that brings several advantages to the web visitor. A web browser is defined as a software application, a typical HTTP (hypertext transfer protocol) client that helps the internet visitor to interpret the HTML (hypertext markup language) documents and display the content from web servers or in file systems. Today there are a variety of internet browsers available. The prominent browsers available for personal computers include Microsoft Internet Explorer, Mozilla Firebox Opera Netscape and so on. A browser is the most commonly used kind of user agent. The largest networked collection of linked documents is known as the World Wide Web. Web browsers communicate with web servers primarily using HTTP (hyper-text transfer protocol) to fetch WebPages.