The Dude - MikroTik is a Latvian company which was founded in 1996 to develop routers and wireless ISP systems. MikroTik now provides hardware and software for Internet connectivity in most of the countries around the world.
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.
Pandora FMS - Pandora FMS: Opensource monitoring software
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Exoprise - Exoprise provides Digital Experience Monitoring for enterprise SaaS applications like Microsoft 365, Salesforce, ServiceNow, Active Directory, SSO, Okta, Box, and more!
Better Uptime - We call you when your website goes down