Next-Generation Intrusion Prevention System (NGIPS) - Cisco Firepower NGIPS (Next-Generation IPS) provides contextual awareness, security intelligence, and advanced threat protection against attacks and malware.

Monitornator - Server monitoring made simple

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

OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.

Zeek - Buy and sell gift vouchers

NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.