Sits in your taskbar and filters articles from multiple RSS feeds. RSS Filter is a program that sits in your taskbar and periodically sifts through your favorite RSS feeds for words or phrases of interest to you. It is capable of simultaneously adding and removing articles from feeds based on supplied keywords. The latest windows version now supports CiteULike. (Thanks in no small part to a sub-30-minute turnaround on a feature request. Crazy, right?)
This program was something I wrote for myself to keep up with scientific journals such as PRL or the arxiv (cond-mat), but it works just as well with any other RSS feed.

The list of feeds to check is located in the file User/feeds.txt. RSS Filter will automatically create an example file when you first run it. To add a feed, just add a line of the form URL|name, such as
"www.softsea.com/rss.xml|softsea"
and then restart RSS Filter. With the above line in feeds.txt, "my feed" should appear in the configuration list box, and RSS Filter should start checking it with the rest.

The license of this software is Free, you can free download and free use this rss reader software.