We use ActiveMQ and it's fine. It speaks STOMP which is nice for interop. It's JVM so it gets a little weird when it's out of memory. We're also playing with K

We use ActiveMQ and it's fine. It speaks STOMP which is nice for interop. It's JVM so it gets a little weird when it's out of memory. We're also playing with Kafka which takes things in a different direction than the JMS-based systems like ActiveMQ. So far so good.