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No minimum requirements.
A heap size of 256~512MB is generally sufficient to process typical SOAP messages.
Requirements may vary with larger message size and on the number of messages processed concurrent.

No minimum requirements.
The installation will require ~125 MB excluding space allocated for log files and Databases.

Linux, Solaris, MS Windows - XP/ Vista (Not fully tested on Windows Vista).
As WSO2 ESB is a Java application, it is generally possible to run it on other operating systems with a JDK 1.6.x runtime.
Linux/Solaris is recommended for a production deployment.

Java SE Development Kit (JDK)

• To launch WSO2 ESB as it is a Java application.
• To build WSO2 ESB from the Source distribution (both JDK and Apache Maven are required).
• To run Apache Ant.

• Installing Java Development Kit (JDK) for ESB on Linux
• Installing Java Development Kit (JDK) for ESB on Windows

Apache ActiveMQ
JMS Provider

• To enable the WSO2 ESB JMS transport and try out JMS samples. The ActiveMQ client libraries must be installed in the ESB classpath before you can enable the JMS transport.

5.5.0 or later

If you use any other JMS provider (e.g. Apache Qpid), install any necessary libraries and/or components.

• Installing Apache ActiveMQ for ESB on Linux
• Installing Apache ActiveMQ for ESB on Windows

Apache Ant

• To compile and run the sample clients.

1.7.0 or later

• Installing Apache Ant for ESB on Linux
• Installing Apache Ant for ESB on Windows

Apache Maven

• To build WSO2 ESB from the Source distribution (both JDK and Apache Maven are required).

2.1.0 or later
2.2.0

to 3.0.x - to build the source distribution.

• Installing Apache Maven for ESB on Linux
• Installing Apache Maven for ESB on Windows

Mozilla Firefox

• To access the ESB Management Console.

3.0 at a resolution of 1024x768 is recommended.

MS Internet Explorer 7 or Google Chrome can also be used. But Firefox is recommended.