McAfee Network Security Platform - McAfee Network Security Platform guards all your network-connected devices from zero-day and other attacks, with a cost-effective network intrusion prevention system.

Lynis - Security auditing tool for systems running Linux, macOS, BSD, and other UNIX-based systems.

snort - Snort is a free and open source network intrusion prevention system.

Lion - Accountability browser for the modern day

Suricata - Suricata is a high performance Network IDS, IPS and Network Security Monitoring engine.

Silverback - Silverback 3