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.

Visualping - Visualping is the easiest to use website checker, webpage change monitoring, website change detector and website change alert software of the web. Read more about Visualping.

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.

Wachete - Track web page changes and get notified. Free Sign-up. Have all data in one place

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

Update Scanner - Update Scanner is a Firefox extension to monitor web pages for updates.