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.
Typesense - Typo tolerant, delightfully simple, open source search 🔍
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
autoComplete.js - Simple autocomplete pure vanilla Javascript library.
Better Uptime - We call you when your website goes down
Algolia Search for WordPress - Bring instant and relevant search to your WordPress blog