SPYSERP

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

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

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

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

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.

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