The benefits of using Selenium as an automation testing tool are listed below −
It is open-source and comes free without licensing cost.
It can be used in more than one platforms like Windows, Mac, Linux, and so on.
It can be used for testing an application in more than one browser like Chrome, Firefox, IE, Safari, and so on.
It has a big community assistance for resolving users' queries.
It can support record and playback features with the help of Selenium IDE.
It can reduce use of resources and time consumption by executing tests in headless mode.
It can execute tests in more than one operating systems and browsers simultaneously by dispersing tests in multiple machines with the help of Selenium Grid.
It can be integrated easily with various test management, reporting, build and continuous integration tools, third party APIs and test frameworks.
It can be used for testing multiple devices like Blackberry, iPhones, Android.
It has easy and friendly APIs.
It supports simulation of mouse and keyboard actions.
It comprises various test tools – Selenium Grid, Selenium IDE, and Selenium RC, hence often called as a suite. Each of these tools are used for a specific purpose.
It is flexible since it can be used with multiple frameworks like TestNG, JUnit and so on.
It gives reusability of tests since the same tests developed can be validated against multiple browsers.
It can be used for a wide range of testing which includes functional, regression, end-to-end, cross browser, smoke, sanity, acceptance, integration, and so on.