Evaluation. Evolution. Likely evaluation. The best tool to evaluate a web site's SEO strategy is the brain. You may get hints of how successful a strategy is using Google Webmaster Tools, Alexa, auto searchers ... but actually performing searches and assessing things like a keyphrase competitor's web page's content, your own source coding, navigation system, external influences, quality of traffic ... these things require actual mental work and experience that cannot be replaced with any single technology, yet.
canadafred
SEO Alumni
1,135 posts since Feb 2006
Reputation Points: 204
Solved Threads: 30
Skill Endorsements: 12