Something like pubsubhubbub that does not depend on google app engine

I am looking for something like PubSubHubbub that does not depend on google app engine to run.

What I need is a开发者_如何学JAVA tool that can track for me a big very large number of rss or atom feeds and issue events when they are updated.

pubsubhubbub is a protocol, and, as such, does not depend on app engine. For example, superfeedr is another implementation of this protocol (I believe it's free for the first 1000 feeds, then something like 50 dollars a month for the next 1000 feeds, then decreasing gradually for even larger number of feeds).

Here is Django library implementing this protocol.