Web Service/RSS bus


I am wondering if there are any such application exist in rails or ruby

RSSbus in short a service bus for aggreating RSS feeds, web services
what not… instead of doing per service integration the bus takes care
of all the RSS/web service connections and provide a unfied feed to your

I googled but found more PHP and .Net and Java stuff not ruby anyone
knows of any such apps?

All the best and thanks for the hint.