Selenium is one of the most widely used open-source Web UI (User Interface) automation testing suites. Selenium supports automation across different browsers, platforms, and programming languages.
Selenium can be easily deployed on platforms such as Windows, Linux, Solaris, and Macintosh. Moreover, it supports OS (Operating System) for mobile applications like iOS, windows mobile, and android.
Selenium test scripts can be coded in any of the supported programming languages and can be run directly in most modern web browsers. Browsers supported by Selenium include Internet Explorer, Mozilla Firefox, Google Chrome, and Safari.