Ginger

Ginger is a news reader for rss news feeds. Once it is hosted in a web server, a user can login and read her news in the web browser.

Features:

multi-user web application

multiple news feeds per user

message tagging

powerful message filtering

very customizable

scripting interface

It is based on Django and Python and is real-world tested to run in Apache with the wsgi module on Debian Linux.

It has a scripting interface (Python powered). It has powerful filtering capabilities (by means of tags). It has an easy interface without any lumber (e.g. for social stuff).