Google's official speed measurement tool, recommended for mobile terminals
Keyword artifact: search volume of keywords in different countries, as well as ad clicks, keyword difficulty
Give you actionable insight to help you optimize your online sales and marketing efforts
Integrate the best and most complete data in the industry and analyze the keywords of competitors
Screaming Frog is a search marketing agency drawing on years of experience from within the world of digital marketing.
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.
A SEO rank tracker module. It will very help full for specific ranking factor for each keyword.