It is one of the best cross-browser testing tool that provides both web and mobile application testing. It is a cloud-based testing that offers continuous testing on over 800 operating systems and browser combinations. It automates web application testing by using iOS simulators and android emulators. It offers live web testing that gives instant access to browsers and OS in cloud environment to debug applications and test corner cases. In addition, it also provides secure mobile application testing and supports test automation with automation frameworks such as Espresso and Appium. Moreover, it is an open source software that gives you full access to it’s source code.