Looking to determine if the output from Eiffel for .NET has been tested with the MonoProject.org environment and to what extent?
... I compiled an Eiffel "Hello World" in EiffelStudio and let it run on Linux with Mono. That worked. Unfortunately, I do not have any more experiments to report, but it might be an encouragement.
We do test both against .NET and Mono although we only actively support the Microsoft .NET runtime. They are some minor differences between the 2 frameworks but overall Mono has caught up with Microsoft and it is quite compatible.