I've been using RabbitMQ in a few setups now, and I can't shake the feeling that there must be something that's more easily set up. Despite it's conveniences it's hard to justify MQ for a solution that only processes a couple of thousand messages a day, simply because maintaining RabbitMQ is so much work.
Does anyone know an AMQP implementation with a simple installation and maintenance process?
For those who don't know it, RabbitMQ is an AMQP implementation written in Erlang. It is supposed to be very stable, but that is only really the case if you know enough about Erlang to avoid its problems. Whether it's memory limits or changes in the hostname, there is always a need to get deeper into it.
http://www.zeromq.org/ might be what you are looking for. If you are on Windows you might use MSMQ
EDIT: I guess I missed the AMQP part of the question.