Erik Moeller wrote:
We're looking into the possibility of setting up a planet-style feed aggregator for Wikimedia blogs. It would be nice to get some software recommendations. Specifically, we would need an aggregator that supports
- web based administration
- filtering feeds based on tags assigned to posts
Planet (http://www.planetplanet.org/) is the canonical choice. It doesn't do web administration, but it's configured through a trivial INI-style text file, so you could slap a web administration frontend to it in a few lines of your favorite language.
As for filtering, you have to depend on the blogging software for each individual blog to export tag-specific feeds. Almost all reasonable blog software does this, with exceptions being things like Advogato.