Woospy has deployed a lot of tracking code through this tool.

A SEO rank tracker module. It will very help full for specific ranking factor for each keyword.

Give you actionable insight to help you optimize your online sales and marketing efforts

Majestic (previously known as "Majestic SEO") is a backlink analysis company found at http://majestic.com that runs a business constantly analyzing the domains that make up the internet.

A cloud-based, web-crawling solution that helps enterprises to diagnose and fix technical and performance issues caused by poor SEO. 

Screaming Frog is a search marketing agency drawing on years of experience from within the world of digital marketing.

Mangools is an SEO toolset that's great for bloggers, affiliate marketers, SMEs or SEO agencies.

A full-featured, powerful Analytics Data solution

Integrate the best and most complete data in the industry and analyze the keywords of competitors

Keyword artifact: search volume of keywords in different countries, as well as ad clicks, keyword difficulty

Mainly use this tool to check the Da and Pa values of the website

I often use this tool to write articles for self-question and self-answer promotion. Generally, I will not tell people who are not familiar with it.

Keyword semantic mining, very easy to use

Provide 1000 free keyword suggestions

Google's official speed measurement tool, recommended for mobile terminals

An authoritative website for measuring website speed, providing a lot of professional advice

A free tool from Google that helps developers, website owners, and SEO professionals understand how their site is performing on Google

Several tools are available in order to generate schema like Google Structured Data Markup Helper