Selenium is the most widely-used open source test automation solution in the world today for automated web application testing. Running in most browsers and operating systems and controllable by popular programming languages and testing frameworks, the Selenium automation testing suite of tools is used by many organizations around the world to create robust web browser automation.Selenium provides a record/playback tool for authoring tests without the need to learn a test scripting language (Selenium IDE). It also provides a test domain-specific language (Selenese) to write tests in a number of popular programming languages, including C#, Groovy, Java, Perl, PHP, Python, Ruby and Scala. The tests can then run against most modern web browsers. Selenium deploys on Windows, Linux, and OS X platforms. It is open-source software, released under the Apache 2.0 license.