Appium is an open-source test automation framework used for testing mobile applications. It allows users to test various types of mobile applications such as Native, Hybrid and Mobile Web, using standard WebDriver library.

The striking feature of Apium is that it allows testing all the three types of mobile applications native, hybrid and mobile web. It also allows running the automated tests on actual devices, emulators, and simulators. It is one of the most ideal tools for mobile application testing. Using Appium, automated tests can be run on actual devices like tablets, mobile phones, etc.