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.

HostedScan.com - Online vulnerability scanner for servers, networks, and web applications.

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.

HackerTarget.com - Security Vulnerability Scanning based on Open Source Tools.

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

Intruder - Intruder is a security monitoring platform for internet-facing systems.