Many companies or programmers develop SEO tools to help all SEO learners, practitioner, and experts implement their SEO campaigns successfully. The tools are meant to help you configure your website for search engine optimisation purpose. Tools worth taking note are keyword popularity tool, domain age tool, link quality assessment tool, search engine ranking report, as well as backlink anchor text analyzer tool. Bear in mind that there are a lot of other tools out there which are not mentioned here. There are tools that are offered free and some are for commercial purposes. Free tools tend to be more popular but as it is free, there will always be some limitations implemented on the tools. Paid versions however, will give you the freedom to use all that you possibly could.