Just some options I've found a few people discussing. Hope it helps.

- **Feed Wrangler** 
   
   >David Smith announced that he’s been working on an RSS aggregation service to replace Google Reader.
- **Feedly** 
   
   > ... just announced that if you’re using their app, they plan to seamlessly integrate the syncing to their own sync server.
- **Fever**
   
   > a self-hosted feed catcher that already syncs with Reeder, as well as quite a few other iOS apps.
-  **River2**
   
   > River2 is a River of News feed reader with lots of features.

Source: [1][reader] & [2][wrangler]

[reader]: http://shawnblanc.net/2013/03/goodbye-google-reader/
[wrangler]: http://shawnblanc.net/2013/03/feed-wrangler/