Seolyzer - Seolyzer is the ultimate SEO tool that provides you with all the information you need to improve your website’s health and performance.
SEOmator - SEO website analysis & audit tool
Panguin Tool by Barracuda Digital - See your website's Google organic visit data overlaid with Google's major algorithm updates and changes to easily identify the impact on your website. Technology by Barracuda Digital.
UpCity Free SEO Report Card - UpCity Free SEO Report Card is an SEO software that is essential for any business with an online presence to improve Search engine optimization.
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.
Whatsmyserp - Powerful Rank & Serp Tracking. Completely Free.