Trackur is Andy Beal's ORM tool (Online Reputation Management).
It's pretty good, not sure that it would be a replacement for Google Reader, although to be fair I've never liked reader so pleased to see it go, they never did a jot of development work with it.
The plus side to this is that the 2005 RSS technology might lead someone (Digg possibly) to come from the pack and make a much better RSS reader that we can all adopt.
I use Reeder for the Mac/iPad etc. and they say they are working on a solution, they have some time still.
Trackur is good, I give it a big thumbs up.