Cisco Umbrella - Cisco Umbrella is a cloud security platform that provides the first line of defense against threats on the internet.
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.
McAfee SmartFilter - McAfee Web Protection is a web security solution that includes an on-premises secure web gateway and SaaS-based web security delivered from the cloud.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.
Better Uptime - We call you when your website goes down