Screaming Frog SEO Spider - The Screaming Frog SEO Spider is a small desktop program (PC or Mac) which crawls websites’ links...
Virusdie - All-in-One cloud-based, simple, powerful and gorgeous website security tools built for everyone.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
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.
Pulno - SEO Audit and Website Analysis. Pull up your SEO.
Chaos Toolkit - A chaos engineering toolkit to help you build confidence in your software system