Rabbitmq-arch is a project mainly written in ..., it's free.
Arch package for rabbitmq
Modified rabbitmq package def for Arch, based on:
http://aur.archlinux.org/packages.php?ID=19090
This version sets up an explicit cookie for use by rabbitmq, removing the dependency on what user is running the Erlang process (distributed Erlang nodes use the cookie in ~/.erlang.cookie).