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
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