Lightweight persistent message queue for Linux?

Question

Is there a (preferably no cost) message queuing solution for Linux that has disk-based persistence (e.g. can survive a reboot)? I'm looking for something equivalent to MSMQ on Windows, fairly basic and lightweight and not, say, MQSeries.

This will be used from C++ components.

Answer 1

http://www.rabbitmq.com/

http://activemq.apache.org/

Answer 2

I've installed and used ActiveMQ. Definitely a great choice!