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copied!<p>I think you mix a few things up: <em>MQTT</em> is an application level protocol and uses TCP as transport protocol. <em>MQTT</em> can also be used with Websockets as transport. <em>MQTT</em> is, if you will, a lightweight alternative to <em>JMS</em> and <em>AMQP</em>. </p> <p><em>AMQP</em> is a popular and reliable alternative to <em>JMS</em> and is well suited for business and mission critical messaging. It is very feature rich and widely used. Note that <em>AMQP</em> is a messaging protocol while <em>JMS</em> is an API (which can even use <em>AMQP</em> as transport). You can use <em>AMQP</em> directly in Java Applications with Libraries such as the <a href="http://www.rabbitmq.com/java-client.html" rel="noreferrer">RabbitMQ Java Client</a>.</p> <p><em>MQTT</em> on the other hand is perfect fit for telemetry data and scenarios where you have many clients which communicate with a single message broker and where low bandwidth usage, memory efficiency and battery life on the clients is key.</p> <p><em>JMS</em> does not define any transport protocol (in contrast to MQTT) and anything could be used here. I personally think TCP is a good fit here, too.</p> <p>I do not know about OpenMQ but for JMS and AMQP I can recommend <a href="http://activemq.apache.org/" rel="noreferrer">ActiveMQ</a>. For MQTT there are a few brokers out there including <a href="http://www.hivemq.com/" rel="noreferrer">HiveMQ</a> and <a href="http://mosquitto.org/" rel="noreferrer">Mosquitto</a>.</p> <p>Obligatory Disclaimer: I am a developer of HiveMQ, so I am probably a bit biased ;-)</p>

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