Some features:

• Any Number Of Domains: You can compare as many URLs as you see fit.
• Keyword Selection Onscreen: Compare your ranking position by selecting keyword on the screen.
• Visibility Results: Search engines are increasingly turning to a key visibility index to determine your ranking. As more URLs link to your site and the more users click on search engines results to your site then the higher your ranking becomes
• Color Coding Results: Your rankings visibily stand out and you know instantly when you are slipping or not even listed!