I was wondering if anyone knew of any noteworthy SEO tracking web apps (either free or paid). I.e. i want to be able to track page rankings, rankings against keywords, trends over time etc.
I've seen a couple, but most seem pretty amateur. I was hoping that there might be a gem out there somewhere?
PS. I am aware of the google tools (webmaster and analytics). What I am interested in, is a web solution that will help me pro-actively keep on top of my sites SEO strategy, as well as pro actively alert me to opportunities to increase / enhance exposure.