MOVED: http://code.google.com/p/rssfilter/ Selects and/or rejects articles from RSS feeds based on keywords you supply. Runs in your taskbar! Originally intended to filter new content from scientific journals such as PRL or the arxiv (cond-mat, etc)
Iris is an interface for monitoring multiple pages and RSS files for changes. You can affect keywords or regexp to each web-page to receive mail alert. Version 6.6 is a web based application. Since version 7.2 it's a Perl-gtk application
A Java Swing application which monitors RSS feeds you added with keywords to filter. Blink window if new topic is found and the app is not on the top. Also supports email notification.