Advanced RSS feed combiner/filter website or script

I'm almost in desperate need for a website which can combine and filter RSS feeds (unique filters for individual feeds would be great but not required) into a single RSS feed which ofcourse needs to update itself when any of the feeds in it updates. Paid or free doesn't matter. There's no problem for me to buy such a script and host it myself if anyone of you knows one. It must return the filtered and combined feed as a link, not a downloadable .xml or anything like that.

I've tried a couple of the obvious ones when you google for it, like siftrss for filtering and rssmix to combine them, but it doesn't seem to update the combined feeds..Anyone knows about a reliable service/script for this?

 

Thanks, but tried it. You cant set filters on that one. I would rather not have to create combined feed on one site, and then filter it on the other. Almost every website have different update intervals and I can accept update every 2 hours, prefer hourly or even more often.

 

Not really sure I understood your requirements, but I've used Gecko Tribe's CaRP Evolution for a while to pull several different RSS feeds for a news page on my sites. They have another product called Grouper that I think might be what you are looking for, but I've never used it:

https://www.geckotribe.com/rss/grouper/

You might try contacting the owner there and asking about your specific requirements. He's always been good about getting back to me when I had questions/issues.