So far I know about nothing that is the same. I saw Huginn, https://github.com/cantino/huginn/, and I think that could be used to build something like Pipes, but it is not the same and does not have the feed focus. IFTTT can only do one thing - send you emails when something occurs in a feed. There are a bunch of other projects that look a lot like IFTTT, but that is not what I search for. I looked at zapier, elastic.io - they are app focused, not feed focused.I'm asking because I thought a lot about how to build something like Yahoo Pipes - yesterday I realized that a pipe it is a graph of blocks where the root is the pipe output, and not that the feed inputs are the roots. Very early alpha code is there.
I think the open web needs some kind of infrastructure to manipulate feeds. But I wouldn't mind not really building it if there is already something.