The WSO2 ESB is an XML and Web services centric Enterprise Service Bus that is lightweight, powerful and extremely fast


Proxy Services
Create virtual services that expose existing services over different transports, QoS semantics (WS-Security and WS-Reliable Messaging), or interfaces (WSDL, Schema and WS-Policies)
Scheduled Tasks
The Quartz scheduler lets administrators schedule tasks to run at specified intervals. Tasks may be used to initiate long-running tasks, automate recurring processes and facilitate reporting etc.
Integrated Registry
Consists of an integrated Registry that manages resources, and allows configuration and resources to be dynamically reloaded if necessary
Non-blocking Transports
The NIO based http/s transports are based on the proven Apache HttpCore library, and provides a completely asynchronous, non-blocking model. In addition, the WSO2 ESB supports JMS 1.0.x upwards, Mail and Apache VFS supported file systems