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.
JavaScript Quiz - Check your knowledge by having fun.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
The Ultimate GDPR Quiz - Learn how to get GDPR compliant in seconds
Better Uptime - We call you when your website goes down
Triplebyte - Hire engineers by measuring their ability, not credentials