Appium is one of the most popular open-source test automation frameworks.
Calabash is an open-source testing framework tool that is developed and maintained by the Xamarin team. It works for both Android and iOS apps.
It is also an open-source tool. It allows users to write structured acceptance tests using (Cucumber) and have them execute against your iOS app.
Robotium is a testing tool that is designated for handling android apps only under an automated testing framework. Robotium is specifically designated for black-box testing on android applications.
UI Automator is suitable for cross-app functional UI testing of installed apps.
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