Any opensource application is available for to test hybrid application?
For Manual Testing, you can use the emulators provided with the IDEs.
- XCode Simulator (iOS)
- Android Studio
- There are online versions of both available online from services like BrowserStack.
For automation there are drivers for Selenium, JUnit tests in Android Studio, Unit tests in Xcode, or Appium (which uses the emulators from XCode and Android Studio and runs Selenium tests). If you go the automation route, Appium seems to be the most popular at this time.