What platforms does ActiveMQ Support?
ActiveMQ 5.0-5.7 supports any Java platform of JDK 5.0 or later. To run on 1.4 see these instructions. You can use ActiveMQ 4.x on Java 1.4. ActiveMQ 5.8 and later require Java 6 or higher.
ActiveMQ is based on J2EE 1.4 or later and so implements JMS 1.1 and a JCA 1.5 Resource Adaptor.
We regularly test ActiveMQ on Windows, OS X, Linux and Solaris though we're aware of folks who use AIX too.