Ahrefs Webmaster Tools - Optimise your website and get more traffic from Google.
Textalyzer - Analyze text readability and SEO parameters
Dareboost: Website Speed Comparison - Check how fast your website is against your competitors
SEO Analyzer By Neil Patel - A free SEO analyzer for your site
Treo Site Speed - Find out how fast your website is for real users
Website Speed Ranker - Compare how fast your website loads vs your competitors