There are at least four major free tools for your website SEO and traffic evaluation.
1.Google webmaster tool.
You need to submit your website link here for indexing.
You can also submit your site map here to help google understand your web and crawl across it more smoothly.
It helps you see clearly what your traffic consists of, your rank and your external links.
Evaluate social media influence and links of your website
Check keywords, external and internal links of any websites along with the html codes.