The tools have already been tested
Many manufactures are putting out seo tools today. Any search engine search will provide you with page after page of names of products that are either new or established as search engine optimization tools. The questions is, how do you know which one will ultimately produce the best seo tools ranking for you. Of course you could purchase a cross section and test them to see what works but that would be time consuming and be well beyond the budget of most web masters. Or you could go to the Tools2Optimize web site and read the reviews of the products that they have already tested for effectiveness.