I use a self-hosted instance of TT-RSS on my ODROID-XU4 mini server running Debian Linux.
Why isn't NewsBlur on this list? It's one of the most recommended. I use it and love it.
Our RSS feed reader may be of interest for many of you too, as it is really simple to use!
The biggest loss is the simple 'add to Google Reader' button though. I doubt 'Add to Feedly' will catch on...