Apache Qpid Broker-J
6.3#17 in message broker softwareFree planFree planAPILinuxmacOSSelf-hosted
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It suits teams that need a self-hosted AMQP broker with configurable routing, queues, persistence, and authentication. Its management interfaces and Windows and UNIX installation documentation may also fit teams operating across those systems.
It suits enterprises, startups, and hobby developers that need managed LavinMQ or RabbitMQ clusters. Teams needing monitoring, messaging protocols, or cloud deployment options may find the listed setup relevant.