WebGazer
UptimeRobot
StatusCake
Pingdom
Hyperping
updown.io
Oh Dear!
RapidSpike
Monitoria.ca
UptimeRobot
Pingdom
RapidSpike
StatusCake
Better Uptime
Uptime.com
Simple Ops
WebGazer is an uptime monitoring platform that checks if your website is up as it should be and notifies you if anything goes wrong
Monitoria provides active monitoring for your website. It will periodically send request to the website and verify it's still running. When it detects an issue, it will send you a notification.
Uptime monitor will send requests to your website in short intervals and notifies you immediately when your website goes down.
SSL monitor will send a request every 24 hours and notifies you if your SSL certificate is close to expiration. You can configure how many days in advance you receive notifications.
WebGazer Monitoria.caUptimeRobot - Free Website Uptime Monitoring
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
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.
RapidSpike - RapidSpike is a reliability, performance and security monitoring service for transactional websites. Using next-generation synthetic monitoring & deeper than ever before data, RapidSpike is for businesses serious about protecting their online revenue
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
updown.io - updown.io is a HTTP(S)/TCP/ICMP monitoring service which checks periodically the URL you want and reports back any anomaly.