what is activemq broker
From Wikipedia, the free encyclopedia. Apache ActiveMQ is an open source message broker written in Java together with a full Java Message Service (JMS) client. It provides Enterprise Features which in this case means fostering the communication from more than one client or server.he communication is managed with features such as computer clustering and ability to use any database as a JMS persistence provider besides virtual memory, cache, and journal persistency. ActiveMQ is used in enterprise service bus implementations such as Apache ServiceMix and Mule.