SEOattack.org is an amazing free tool for performing simple analysis on your competitors. It's very easy to compare the efforts of your competitor marketers.
Free SEO tools are:
1. Google Keywords selections too
2. Google Penalty checker
3. Alexa tool
4. Directory Search Tool
5. PPC tool
Thanks for your nice administration and I use seo4firefox and seoquake add-ons for Firefox for this purpose.
[NOPE: NO PORN SIGS. ~ the admin]