Wazuh - Open Source Host and Endpoint Security
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Riemann - Container Monitoring
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Fortinet FortiAnalyzer - Fortinet FortiAnalyzer is a powerful product for Security Fabric Analytics and Automation.
iTerm2 - A terminal emulator for macOS that does amazing things.