I'm Leselys, your very elegant RSS reader. No bullshit Android, iPhone apps, just a responsive design for every device.
Leselys can be used with your very own backend. Take a look at the MongoDB example.
There is a demo here (demo/demo).
Leselys is in heavy development right now, and feedback is welcome.
pip install leselys
leselys init --config leselys.ini leselys adduser --config leselys.ini leselys serve --config leselys.ini
Open your browser at http://localhost:5000.
Import your Google Reader OPML file right now!
heroku create heroku addons:add mongohq:sandbox git push heroku master
Don't forget to create a Leselys account with heroku run "bash heroku.sh && leselys adduser --config heroku.ini".