Selenium is a free (open source) automated testing suite for web applications across different browsers and platforms. It is quite similar to HP Quick Test Pro (QTP now UFT) only that Selenium focuses on automating web-based applications. Testing done using Selenium tool is usually referred as Selenium Testing. Selenium is not just a single tool but a suite of softwares, each catering to different testing needs of an organization. It has four components as :

• Selenium Integrated Development Environment (IDE)

• Selenium Remote Control (RC)

• WebDriver

• Selenium Grid

At the moment, Selenium RC and WebDriver are merged into a single framework to form Selenium 2. ​ ​ Refer next page Introduction to Selenium Web Driver