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.
Kingsoft AntiVirus - Kingsoft AntiVirus is a free antivirus and protection system that delivers the efficient and effective protection system without charging anything from its users.
snort - Snort is a free and open source network intrusion prevention system.
COMODO Antivirus - Comodo free antivirus for real-time security updates, scans for both malware and performance issues, and 100% virus removal. Download free Antivirus here!
Suricata - Suricata is a high performance Network IDS, IPS and Network Security Monitoring engine.
Malwarebytes - Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .