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.
Mr. Robot (TV show) - A cyber-security engineer by day & vigilante by night
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Have I Been Zuckered - Is your phone number present within the Facebook data breach
Better Uptime - We call you when your website goes down
Crowdcurity - Crowdsourced web security. Connecting businesses with security testers.