ServerSuit - ServerSuit is a browser based program that enables remote Linux administration, monitoring, website hosting, and server setup automation.
ISPConfig - ISPConfig 3 is an open source hosting control panel for Linux.
RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems
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.
CloudStick.io - CloudStick is an All-in-one cloud-based control panel designed to manage servers from Digital Ocean, Linode, AWS, Google Cloud, Vultr, or any KVM or Dedicated servers you prefer. Let's deploy together!
Nagios - Complete monitoring and alerting for servers, switches, applications, and services