The WSO2 ESB is an XML and Web services centric Enterprise Service Bus that is lightweight, useful 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)
Integrated Registry
Consists of an integrated Registry that manages resources, and allows the dynamic reloading of changes as necessary
Non-blocking HTTP and HTTPS Transports
The NIO transports are based on the proven Apache HttpCore library, and provides a completely asynchronous, non-blocking model
Management Console
A rich graphical user interface to configure, monitor and manage the deployment, best viewed with Mozilla Firefox 2.0 on a 1024x768 resolution