I enjoy using Fraidycat to read some feeds, in addition to my "river of news". It is a really nice format. But I did really want to use it from multiple devices without importing/exporting every time.
So I have made something that replicates it, kind of, in a hosted app based on a lot of the feed reading code I already had written for riviera. I've called the new thing arboretum, and have a (private) instance running along nicely.
I don't know if I'll keep it private forever, but at least for now it gives it a different feel to my public feed reader.