I believe Hersheys is referring to Internet Business Promoter. I personally use the rank tracker function of Market Samurai. Before I got MS, I looked around for a free tool and never found one that worked very well, but maybe someone else has a suggestion.
Personally I set up a spreadsheet with the top 10, 20 (xx) top keyphrases that I'm targeting with a specific client. Then simply copy and paste each month so as the months go on they can see in a single spreadsheet how they're progressing.
Yes, market samurai has a function called Rank Tracker that will track and log a domain's (or multiple domains') ranks for whatever keywords you enter.