Market Samurai: http://www.marketsamurai.com/c/Antonio (referral link). It's an excellent (and expensive) program for internet marketing and SEO research, available for Mac and Windows (it's made in Flex/Air). If you buy during the trial period, you can get a big discount though. I got my copy for $97.

Screenshot of the screen from which the table has been taken: http://grab.by/grabs/323101a2a3382f4c75b2f077a481931c.png