– Google’s Toolbar is worth downloading as it will tell you what your Google PageRank is. Use the Toolbar’s PageRank™ display to tell you how Google’s algorithms assess the importance of the page you’re viewing. Plus there is a pop-up blocker that will help you surf the web.
Here is a complete list of the features of the Google Toolbar – click here
Dowload here for Firefox Browsers – click here
Download here for Internet Explorer Browsers – click here