discusses a trio of no-brainers from Google: Alerts, Insights for Search and Trends for Websites, as well as proven tools like Websitegrader (and its sibling Twittergrader). But Eisenberg also digs
into lesser-known gems like Web Page Readability, which helps you compare the density and complexity of your page's copy to your competitors', and Attention Meter, which pulls ratings from across
Alexa, Compete and Quantcast into one dashboard.
Also, try using the Wayback Machine to see how your competitors' sites have evolved over time, Xinu Returns for a view of your search and social media benchmarks, and FeedCompare to gauge how you stack up in terms of subscribers.