ActiveMQ

Flexible & Powerful Open Source
Multi-Protocol Messaging

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.

ActiveMQ Classic 5.19.1 Release

Maintenance release on the 5.19.x series....more

Oct 11th, 2025

ActiveMQ Artemis Console 1.3.0

HawtIO Upgrade and Bug fix release....more

Sep 2nd, 2025

Apache.NMS.AMQP 2.4.0 Release

New acknowledgment customization for expired messages, client-side redelivery delay, and security fix for binary serialization....more

Aug 24th, 2025

ActiveMQ Classic

Long established, endlessly pluggable architecture serving many generations of applications.

Partial Jakarta Messaging 3.1 & JMS 2.0 support and full JMS 1.1 support + 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

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ActiveMQ Artemis

High-performance, non-blocking architecture for the next generation of messaging applications.

Full Jakarta Messaging 3.1, JMS 2.0 & 1.1 support + 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

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Enjoy the benefits of open source by contributing to a code-base, asking a question on one of our mailing lists, or reporting a bug or requesting a feature. When you participate, we all win. That's the power of community. That's the power of open source.

Protect your data & Balance your Load

ActiveMQ provides many advanced features including message load-balancing and high-availability for your data. Multiple connected "master" brokers can dynamically respond to consumer demand by moving messages between the nodes in the background. Brokers can also be paired together in a master-slave configuration so that if a master fails then the slave takes over ensuring clients can get to their important data and eliminating costly downtime.

Easy Enterprise Integration Patterns

Enterprise Integration Patterns describe the various ways in which multiple applications generally interact and integrate with each other. Aysnchronous messaging is at the heart of this integration, and ActiveMQ makes it easy to leverage these patterns via Apache Camel routes deployed directly on the broker.

Flexible Deployment

ActiveMQ is most commonly deployed as a standalone process. This option isolates ActiveMQ from any particular application and provides maximum flexibility for resource allocation and management. However, ActiveMQ can be configured to have a very small footprint which makes it viable to embed it within your application. This option can provide an application with simple, powerful messaging semantics and also allow easy message exchange with other applications.

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