Google's official speed measurement tool, recommended for mobile terminals
A free tool from Google that helps developers, website owners, and SEO professionals understand how their site is performing on Google
An authoritative website for measuring website speed, providing a lot of professional advice
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.
Provide 1000 free keyword suggestions
A cloud-based, web-crawling solution that helps enterprises to diagnose and fix technical and performance issues caused by poor SEO.