Feedjack is a feed aggregator writen in Python using the Django web development framework.

Like the Planet feed aggregator:

* It downloads feeds and aggregate their contents in a single site
* The new aggregated site has a feed of its own (atom and rss)
* It uses Mark Pilgrim’s excelent FeedParser
* The subscribers list can be exported as OPML and FOAF

But FeedJack also has some advantages:

* It handles historical data, you can read old posts
* It parses a lot more info, including post categories
* It generates pages with posts of a certain category
* It generates pages with posts from a certain subscriber
* It generates pages with posts of a certain category from a certain
   subcriber
* A cloud tag/folksonomy (hype 2.0 compliant) for every page and every
  subscriber
* It uses Django templates
* The administration is done via web (using Django's kickass autogenerated
  and magical admin site), and can handle multiple planets
* Extensive use of django’s internal cache engine. Most of the time you
  will have no database hits when serving pages.

Web site is http://www.feedjack.org/