I'm using Movim (p.s.: I'm the author - https://movim.eu/). I have a little daemon in Python that parses hundreds of RSS/Atom feeds and push them to public XMPP Pubsub nodes, https://github.com/edhelas/atomtopubsub.

After that I just use Movim to subscribe to them and I can enjoy real-time pushed news in a nice UI that is available on my phone, browser on in an app. And everyone can also subscribe and publish on new nodes. I really think that XMPP is a really nice protocol to do such things.