Google Search Console - Google Webmaster Tools provides you with detailed reports about your pages' visibility on...

Q-Stats - Get free marketing insights for every question on Quora.

Ahrefs - Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!

Site Rank Data - View historical rank information of websites via time series charts.

Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.

Seoxan - check seo report for any website, alexa ranking, server information, meta tags, authority, page speed and more