StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Calmind - Be smarter, less stressed, and healthier—just by listening!
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.
Memento Mori - A little stoic reminder page
UptimeRobot - Free Website Uptime Monitoring
Being - See Instagram through the eyes of your favorite celebrities