1. Uptime monitoring, performance, seo monitoring .

    free

  2. Vigil offers website-monitoring and downtime notifications.

  3. Monitor your domains uptime with Domaintowers Uptime monitor

  4. Prevent human errors when implementing analytics

  5. Smart home security for everyone

  6. Cron and uptime monitoring dashboard

  7. Sends you alerts when your website goes down.

  8. UPDOWNTODAY allows you to check whether the website is down or not.

  9. Uptime monitoring made simple, reliable & affordable. Get instant alerts when your website goes down, weekly reports & performance stats.

  10. Monitor and communicate the status of your site, app or API with your very own status page.

  11. A New & Better Website, Service and Server Performance Monitoring Tool

  12. WebSitePulse monitoring service. Test your site and server. Design your own monitoring service.