The WSO2 Enterprise Service Bus was designed to be an ultra fast, light-weight and versatile Enterprise Service Bus based on the Apache Synapse ESB. It allows you to Connect, Manage and Transform service interactions between Web services, REST/POX services and Legacy systems.

Here are some key features of "WSO2 Enterprise Service Bus":

· Ability to pin a proxy or a task to server instances
· Improved error handling in JMS transport
· New Mail transport that supports POP3/IMAP/SMTP
· Clustering support for the Cache/Throttle mediators
· Maintainance mode support for the HTTP transport
· JMX statistics monitoring and management support
· New mediator - Callout
· Improved REST/POX support
· Annotations support for POJOCommand mediator
· Ability to edit UI-less mediators in raw XML


Requirements:

· Java Runtime 1.5 or higher