Domainz.io - Premium domains, for not so premium prices
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.
Park.io - The best place to backorder/drop purchase expiring ccTLD domain names.
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.
estibot - Domain name valuation
RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems