UX Archive Animated - iOS apps animated user flows
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.
Page Flows - User flow design inspiration for mobile & desktop
Fast Link Checker - An advanced tool to find broken links on web sites.
UI Patterns - Level up with interactive mobile design patterns
Pulno - SEO Audit and Website Analysis. Pull up your SEO.