Google Search Engine:
Google Search Console is the official connection from your site to Google. Best of all, it’s free and easy to use.
Moz:
Moz is a tool to help you improve rankings and search engine visibility for your site or store. It offers a fully stocked toolbox to help you master SEO.
Keyword Planner:
The Keyword Planner can help to search for keyword ideas, tell you how competitive they are, and suggest other related keywords for your site.
Site Booster:
Site Booster puts your site or store on the map, publishing your business information in multiple search engines, review sites like Yelp, mobile apps and locate sites like Google Maps and FourSquare to help your site show up in local searches.
BuzzSumo:
BuzzSumo helps to analyze which content performs best across different topics and among different competitors.