Moz Local Listing Score -See how your local business looks online -700+ keyword ideas based on a single keyword

Google Analytics -Complete web stats and search insights

Google Webmaster Tools + Bing Webmaster Tools -Constant website analysis, alerts, and error reports

Open Site Explorer -Comprehensive link analysis

Google Keyword Planner -Know what people search for in an Incognito Window-Discover auto -fill opportunities

Google Trends -Changes in search volume for key terms

QuickSprout Website Analyzer -Full analysis of your website

Schema Creator -Uber-customize the way your search results appear

SimilarWeb -View site stats for any domain

SERPs Rank Checker -See where your site ranks for certain terms

XML Sitemaps -Build a sitemap

Browseo -See your website the way a search engine sees it

SEO Site Checkup -Audit and score for your website

Searchmetrics Website Analyzer -Performance dashboard for search and social rankings

Find Broken Links -Discover errors on your site

Copyscape -Check for duplicate content

Structured Data Testing Tool -Structured data helps to provide context to the information on your page.