Mobile testing tools include a range of platforms designed to ensure app quality across various devices and environments. Popular tools include Appium, which supports cross-platform testing for Android and iOS, and Espresso for native Android UI testing. Firebase Test Lab and BrowserStack provide cloud-based testing across diverse device configurations. Robot Framework and Detox are also utilized for automation, offering flexibility and support for different testing needs. These tools help automate test cases, simulate user interactions, and ensure comprehensive coverage and app stability.