ActiveMQ, easy to use open source message oriented middleware (MOM)
ActiveMQ is message oriented middleware (MOM), useful for receiving and processing asynchronous messages (queues or topics). It is easily integrated with Java based applications (and others) via the JMS API . ActiveQ offers enterprise scale features which may be required when implementing complex distributred systems such as High availability with failover. Scalability and clustering through a distributed Network of Brokers. Pluggable persistence stores (JDBC, BDB, JDBM, file system). Distributed destinations and XA support. Caching. Connection pooling. Support for cross language clients such as . NET , C++. Support for scripting environments such as Perl, Python, and Ruby. Multiple Transport layers ( TCP , UDP, multicast, NIO, SSL , Zeroconf, JXTA, JGroups). Download at http://activemq.apache.org/
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