Sage

If you are like the typical blogger who checks an average of 15 feeds every day, then I would recommend Sage, a RSS and Atom feed aggregator. (RSS aggregators are applications which enable you to read RSS feeds and are configured to periodically check for new items in the feeds you are subscribed to.)

I initially tried bloglines and though it was good, I was looking out for a better one without having to log in every time I had to check if someone had blogged recently. That’s when I heard about Sage. It is one of the simplest newsreaders around and configuring it is a breeze once you install it from http://sage.mozdev.org

After installation, you have to click on 'discover feeds' once you have the sage sidebar in view. If the current site you are browsing has a feed, then it will be added to your list of feeds and from then on, you'll just have to click 'check feeds' to check if the page has been updated.

The only catch is that you will have to install FireFox to use Sage. If you are one who uses Internet Explorer, I suggest you give FireFox a try and who knows you might not go back to IE just like I did :)