This is not an advertisement.
I stumbled upon WebsiteGrader.com just a few moments ago. All you do is put in your URL, a few keywords you’re ranking in, your competitor’s website (optional), and your e-mail. It will very nicely list a variety of information about your website, and maybe even more importantly, your competitors.
I just found out that one of my websites is starting to overrun my competitor in the search engines. Hooray!
It was one of PC Magazine’s Top 100 Undiscovered Websites, and I can see why. A very nifty tool if you ask me.