SEO Analysis Tools
You'll find a wide range of SEO analysis tools available to help you optimize your web pages and sites. From the viewpoint of your pocketbook, there are two kinds of SEO analysis tool:
Free tools: these free tools generally tackle a single piece of the SEO puzzle, such as generating good keywords, understanding how Google operates on specific sites and keywords, checking who links to your sites, and displaying rankings in multiple search engines at once
Commercial SEO analysis software that must be licensed for a fee.