This plugin was just released (I'm not the creator of it.) Been hearing that it's supposed to be just like the premium plugin Keyword Winner. http://wordpress.org/extend/plugins/seo-live-keyword-monitor/
I just checked the Seo Live Keyword Monitor and it´s nothing like Keyword Winner, Keyword Winner Checks Google insights, Trends and Search to get alternative phrases for your title. Insight for alternative Trends for the latest development in that keyword Search for number of competing page Seo Live keyword monitor only checks keyword density for the tags you have specified. Note: I am one of the developers of Keyword Winner™