Netumo - Ensure healthy website performance, uptime, and free from vulnerabilities. Automatic checks for SSL Certificates, domains and monitor issues with your websites all from one console and get instant notifications on any issues.

Is It Down Right Now? - Network & Admin

AppZero - AppZero is a monitoring and migration tool that allows users to keep track of different applications and servers in both simple and complex IT environments.

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

RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems

Site Down - Site down outage and downtime reports from SiteDown.co