I would like to set up a list server that is implemented  in Ruby
because I want to be able to hack it.

Is there such a thing available?

All I could find on RAA is quickmlserver and that is not down loadable.
I don't know if it reaches the level of Mailman.

What would people suggest as a mail server? Mailman is my current
favorite. But when I tell people about how wonderful  Ruby is. I cannot
forget that mailman is so good and it is written in Python.

John