There is a new UI testing framework in town, White. White is analogous to WatiN, it is a wrapper around Microsoft's UIAutomation Library and Windows messages.

Xamarin Test Cloud Features Aside from offering automated UI testing solutions, it also offers the first cross-platform testing service with the following features: ...

The Xamarin Test Cloud, the automated user interface testing platform the company launched at its Evolve 2013 developer conference in Austin today, is based on Calabash.