Spread Toolkit is a C++ library for messaging and only has partial support for JMS. It doesn't support durable messaging, transactions, XA or full JMS 1.1. It is also dependent on a native code Spread daemon running on the machine.

Apache ActiveMQ on the other hand is the JMS provider used in Apache Geronimo and is J2EE 1.4 certified in Geronimo and is 100% pure Java. ActiveMQ supports transient and durable messaging, transactions, XA, J2EE 1.4, JMS 1.1, JCA 1.5 as well as heaps of different features like Message Groups and Clustering

Performance report

We have a performance report comparing ActiveMQ against a number of other commercial and open source JMS providers. Click here to get the performance report

If you're not convinced by performance reports then please do try running performance tests yourselfs. You might wanna check out our overview of Performance or try using out the ActiveMQ Performance Module Users Manual

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