WebDriver or selenium 2.0 is the most widely used tool of selenium family. This API fit with the same role played by Selenium RC. In simple way can be express webdriver in following format, Selenium 1.0 (IDE) + RC = Selenium 2.0 This has come to address to reduce limitations of RC server and to overcome the IDE drawbacks (only support for Firefox browser). In the long run WebDriver goal is to provide fully object oriented supporting testing tool which will give the durable solution to many modern advanced web application testing difficulties. Supporting browsers Firefox, Internet Explorer, Chrome, Safari, Opera, Android, iPhone (Calls native methods of the browsers). Supporting programming languages C#, Java, Ruby, Python, JavaScript Supporting operating system Windows, Solaris, Linux