Semantic Coherence: Apache ActiveMQ – Signal Evidence & AI Readability

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.

[H6] ActiveMQ 6.2.5 Release
ActiveMQ 6.2.5 is a new milestone for the project, starting the 6.2.x series....more
Apr 23rd, 2026

[H6] ActiveMQ 5.19.6 Release
Maintenance release on the 5.19.x series....more
Apr 23rd, 2026

[H6] ActiveMQ 6.2.4 Release
ActiveMQ 6.2.4 is a new milestone for the project, starting the 6.2.x series....more
Apr 8th, 2026

[H4] ActiveMQ
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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[H5]
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.

[H5]
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.

[H5]
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.

ActiveMQ
The Tried and Trusted Open Source Message Broker
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Apache ActiveMQ® is a popular and powerful open source messaging and Integration Patterns server.
It supports many Cross Language Clients and Protocols, comes with easy to use Enterprise Integration Patterns and many advanced features while partially supporting Jakarta Messaging 3.1 & JMS 2.0 and fully supporting JMS 1.1 and J2EE 1.4+. Apache ActiveMQ is released under the Apache 2.0 License
Grab yourself a download, review our Getting Started Guide, surf our FAQ, or start contributing.
[H4] Features
Supports a variety of Cross Language Clients and Protocols from Java, C, C++, C#, Ruby, Perl, Python, PHP
OpenWire for high performance clients in Java, C, C++, C#
Stomp support so that clients can be written easily in C, Ruby, Perl, Python, PHP, ActionScript/Flash, Smalltalk to talk to ActiveMQ as well as any other popular Message Broker
AMQP v1.0 support
MQTT v3.1 support allowing for connections in an IoT environment.

full support for the Enterprise Integration Patterns both in the JMS client and the Message Broker
Supports many advanced features such as Message Groups, Virtual Destinations, Wildcards and Composite Destinations
Partially supports Jakarta Messaging 3.1 & JMS 2.0 and fully supports JMS 1.1 and J2EE 1.4+ with support for transient, persistent, transactional and XA messaging
Spring Support so that ActiveMQ can be easily embedded into Spring applications and configured using Spring’s XML configuration mechanism
Tested inside popular J2EE servers such as TomEE, Geronimo, JBoss, GlassFish and WebLogic
Includes JCA 1.5 resource adaptors for inbound & outbound messaging so that ActiveMQ should auto-deploy in any J2EE 1.4 compliant server

Supports pluggable transport protocols such as in-VM, TCP, SSL, NIO, UDP, multicast, JGroups and JXTA transports
Supports very fast persistence using JDBC along with a high performance journal
Designed for high performance clustering, client-server, peer based communication
REST API to provide technology agnostic and language neutral web based API to messaging
Ajax to support web streaming support to web browsers using pure DHTML, allowing web browsers to be part of the messaging fabric
CXF and Axis Support so that ActiveMQ can be easily dropped into either of these web service stacks to provide reliable messaging
Can be used as an in memory JMS provider, ideal for unit testing JMS
Find out more.

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