Ahrefs - Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!
SEO Analyzer By Neil Patel - A free SEO analyzer for your site
SEO checker PR-CY - Check all your website’s SEO metrics through our service
Serpstat Website SEO Checker - Check your website's SEO, analyze competitors and keywords
Instant Preview Extension - Adds instant preview to search engine results page
Serpstat - Search analytics, Rank tracking, Backlink analysis and Site Audit tool.