Who is the author of calabash?

There isn't one single author of Calabash. It's an open-source project developed and maintained by a community of contributors.

However, the original creator of Calabash was Xamarin, which is now part of Microsoft.

Here's some more information about Calabash:

* Calabash is a framework for mobile application testing. It allows developers to write automated tests in Ruby for iOS and Android applications.

* The project is hosted on GitHub, and anyone can contribute to its development.

* While Xamarin originally created Calabash, it has been further developed and maintained by a community of contributors.

So, while there isn't one specific author, Xamarin played a crucial role in its creation and initial development.