Apache ActiveMQ is the most popular and powerful open source Message Broker and Enterprise Integration Patterns provider. Apache ActiveMQ is fast, supports many Cross Language Clients and Protocols, comes with easy to use Enterprise Integration Patterns
Apache ActiveMQ is a fast open source Message Bus which supports many Cross Language Clients and Protocols and many advanced features while fully supporting JMS 1.1 and J2EE 1.4. Apache ActiveMQ is released under the Apache 2.0 License
Apache ActiveMQ is a fast open source JMS 1.1 Message Fabric which supports clustering, peer networks, discovery, TCP, SSL, multicast, persistence, XA and integrates seamlessly into J2EE 1.4 containers, light weight containers and any Java Virtual Machine