FreshRSS is a self-hosted RSS feed aggregator such as Leed or Kriss Feed.
It is at the same time lightweight, easy to work with, powerful and customizable.
It is a multi-user application with an anonymous reading mode. It supports PubSubHubbub for instant notifications from compatible Web sites. There is an API for (mobile) clients, and a Command-Line Interface. Finally, it supports extensions for further tuning.
Any client supporting a Google Reader-like API. Selection:
* Android
* [News+](https://play.google.com/store/apps/details?id=com.noinnion.android.newsplus) with [News+ Google Reader extension](https://play.google.com/store/apps/details?id=com.noinnion.android.newsplus.extension.google_reader) (Closed source)