I believe WSO2 ESB is the ONLY complete enterprise service bus which supports the FIX (Financial Information eXchange) protocol. The FIX transport of WSO2 ESB enables the service bus to communicate with FIX acceptors and initiators. FIX messages received by the service bus can be routed, filtered or transformed using the existing set of mediators. If needed, FIX messages can be transformed and sent to external systems over different protocols such as HTTP and JMS.
I published an article titled "FIX Your SOA with WSO2 ESB" which explains how to setup the FIX transport in WSO2 ESB 3.0 and how to use it to implement a variety of integration scenarios. It gives a good overview on how to develop high performance finance data routing systems using WSO2 ESB. Hope you'll like it!
