Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

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.

tcpdump - tcpdump is a common packet analyzer that runs under the command line.

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.

netcat - Netcat is a featured networking utility which reads and writes data across network connections...

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