Liferea is a desktop news aggregator (sometimes
called an RSS reader). Unlike the late Google Reader
or most of its alternatives like the open-source Tiny Tiny RSS
which are web-based and run on a server to be accessed via a web
browser, Liferea is a separate desktop application and uses an embedded
browser to view content.
Sometimes you don't actually care about all of the items in a feed and
the site provides no filtering mechanism. If the uninteresting items are
rare enough, you can just ignore them, but a news aggregator is most
useful if it only notifies you of news items you actually might want to
Luckily, Liferea is very flexible. It supports running a command on
a feed which it calls a
conversion filter. I wrote
some python scripts to filter feeds by title locally.
For instance, I wanted to follow only the changelog posts in the forum feed
but it includes changes to all forum topics, so I checked the
conversion filter option and set the conversion filter to
/path/to/atom_filter_title.py --whitelist "Re: Change log"