PowerDNS - PowerDNS offers open source DNS software, services, and support.

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.

dnsmasq - Dnsmasq is a lightweight, easy to configure DNS forwarder and DHCP server.

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.

Unbound - Unbound is a validating, recursive, and caching DNS resolver.

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