With one-minute website uptime check intervals, and detailed downtime reporting to any device, Uptime.com monitoring offers effortless protection. Why check website availability manually when you can enjoy always-on website uptime monitoring? Our automated alerts dramatically reduce the time it takes to check website uptime and downtime and puts more time back in your day.
UptimeRobot - Free Website Uptime Monitoring
OnlineOrNot - Uptime monitoring for software teams (even teams of one).
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.
Statsignal - Statsignal is a simple and cost-effective way to monitor your website or server and publish a status page of your system.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Uptime Kuma - A fancy self-hosted monitoring tool.