AMQP C++ implementation

Question

We are writing C++ code which needs messaging. Is there a free/open-source and stable AMQP server available that has equally stable C++ client library with it. We also need

Answer 1

I know this is a bit late, I'm kind of in the same position as the asker.

I'm looking at IceStorm and Apache QPid per answers above.

Currently I have rabbit MQ but it's not so easy to integrate with C++.

I think if you have control over both client and server code, and you don't need AMQP "the standard" and IceStorm does what you need, and you're cool with GPL license (or ready to buy a license from zeroC) .. IceStorm seems to be the most stable and cross-language solution out there.