a combination mail client and web browser in spirit, in that it periodically queries a server and downloads content, but only notifies you when something new has arrived--along with giving you the ability to archive news items that are of interest
A simple desktop tool that will pick up RSS feeds and deliver them direct to your desktop. Just like MSN News or Yahoo News. Only with RSS YOU can go out and Choose the content your RSS Reader displays by adding a websites RSS feed to your reader. Get it
An application that reads many RSS feeds on behalf of one or more RSS subscriber. Most RSS readers are also RSS aggregators, but with a few exceptions. Firefox reads RSS files, but does nothing more than compile the items in a menu tree. Therefore, it's an RSS reader, but not an RSS aggregator.