Gilt has adopted Appium as their mobile testing framework and has made significant progress in addressing stability issues that plagued them in earlier versions. The latest release implements the defined part of the Mobile JSON Wire Protocol, providing support for mobile-specific actions, and has improved stability, including fixing XPath-related issues. While some pain points remain, such as error reporting and integration with Xcode workflows, Gilt is overall very happy with Appium's performance and sees it as a crucial tool in their testing process, enabling them to focus on writing more tests and improving the reliability of their automated tests.