Wazuh - Open Source Host and Endpoint Security
Cobalt Strike - Advanced threat tactics for penetration testers.
Riemann - Container Monitoring
ZoomEye - Network mapping service
Fortinet FortiAnalyzer - Fortinet FortiAnalyzer is a powerful product for Security Fabric Analytics and Automation.
Armitage - Armitage makes penetration testing easy by adding a GUI to the Metasploit framework