I don't have a particular project motivating this question at the
moment, but I wondered if anyone has compiled a list of useful
middleware for "API-only" apps similar to the list that Yehuda Katz
put together in his argument for using Rails for such apps:
https://github.com/rails/rails/blob/efd557a60cd976ac17be9e238111a551599caeb5/railties/guides/source/api_app.textile
It would be helpful even to have a list, in one place, of which of
Yehuda's are covered by the basic Sinatra stack and where one can find
the rest.
I could start such a list if there isn't one already.
Eric