Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
98.css - A design system for building faithful recreations of old UIs
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Neumorphism UI - Neumorphism inspired UI web components, sections and pages
Better Uptime - We call you when your website goes down
Glass UI Generator - CSS generator for glassmorphism