Linux amd64 is the dominate internet serving platform; supporting a non-free OS for the benefit of a single test entry seems dumb. I'm all for a Mono entry however.
We also want to test on .Net's native Windows platform. But we need to work on the testing platform we've built in order to automate a Windows server in the same way we presently automate a Linux server.
[1] https://github.com/TechEmpower/FrameworkBenchmarks/issues/15...
[1]: http://nancyfx.org/