There two good seo software You could look at this thread it talk about SEO Soft : http://forums.digitalpoint.com/showthread.php?t=829012
is an other ranking software Here is the web page of free monitor : http://www.cleverstat.com/en/google-monitor-query.htm .. and here the web page os SEO Soft : http://www.webmaster-rank.info/?free_seo_software
Free Monitor is not so good but the Software they have ( accurate Search Monitor fopr Google is great)
Free Monitor for Google is free web promotion software designed for search engine specialists and webmasters. It allows you to find out the rank of your website in Google Top for popular keywords and get more traffic from Google.