Patrick Sexton created a free and useful revamp of his tools at Varvy.com. He calls it the Google Guidelines tool. Why? Well, he went through changed in the Google guidelines for us a few months ago and decided to put a tool together that tested them all.
You can find all the of the Google webmaster guidelines here and now, while they are called guidelines, things like having a robots.txt is not necessary if you do not want to block GoogleBot. So keep that in mind. This tool doesn't imply you are 100% doing something wrong but shows where you may be missing something based on those guidelines.
Here is the test for this site (yes, I know we have issues) - click on it to see the full screen version:
Patrick said on Google+:
The Google guideline tool is now a combined version of many tools and reports on how a site is following the recently updated Google webmaster guidelines.
This is an entirely different tool than you have seen in the past. If you have run your pages through this tool in the past. I suggest you do so again...
If you use Varvy often, you may need to refresh page to see the newest tool. Let me know what you think.
Awesome tool Patrick!
Forum discussion at Google+.