Virusdie - All-in-One cloud-based, simple, powerful and gorgeous website security tools built for everyone.
SanityCheck - Get the exact data you need from Google Search Console.
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.
Website Speed Ranker - Compare how fast your website loads vs your competitors
Chaos Toolkit - A chaos engineering toolkit to help you build confidence in your software system
Dareboost: Website Speed Comparison - Check how fast your website is against your competitors