Apache ActiveMQ is the most popular open source, multi-protocol, Java-based message broker. It supports industry standard protocols so users get the benefits of client choices across a broad range of languages and platforms. Connect from clients written in JavaScript, C, C++, Python, .Net, and more. Integrate your multi-platform applications using the ubiquitous AMQP protocol. Exchange messages between your web applications using STOMP over websockets. Manage your IoT devices using MQTT. Support your existing JMS infrastructure and beyond. ActiveMQ offers the power and flexibility to support any messaging use-case. There are currently two "flavors" of ActiveMQ available - the well-known "classic" broker and the "next generation" broker code-named Artemis. Once Artemis reaches a sufficient level of feature parity with the "Classic" code-base it will become the next major version of ActiveMQ. ## ActiveMQ Artemis High-performance, non-blocking architecture for the next generation of messaging applications. - JMS 1.1 & 2.0 + Jakarta Messaging 2.0 & 3.0 with full client implementations including JNDI - High availability using shared storage or network replication - Simple & powerful protocol agnostic addressing model - Flexible clustering for distributing load - Advanced journal implementations for low-latency persistence as well as JDBC - High feature parity with ActiveMQ Classic to ease migration - Asynchronous mirroring for disaster recovery - Data Driven Load Balance ## ActiveMQ Classic Long established, endlessly pluggable architecture serving many generations of applications. - Jakarta 3.1, JMS 2.0, and JMS 1.1 with full client implementation including JNDI - High availability using shared storage - Familiar JMS-based addressing model - Network of brokers for distributing load - KahaDB & JDBC options for persistence