Internet Explorer 7
I have used the beta for awhile and upgraded to the final release last week. I have never been a IE fan and always used Mozilla browsers with FireFox as my favorite.
The new IE7 is streamlined, has tabbed browsing, and RSS feed integration. I have had no problems with the browser. I really hate to admit that! There are lots of plug ins and add ons available. You can tell the Microsoft crew realized the Mozilla advantage and copied it. It installed easy and retained all my old favorites. IE7 is a step in the right direction for Microsoft. You can get it here.