Nessus - Nessus Professional is a security platform designed for businesses who want to protect the security of themselves, their clients, and their customers.
TinyWall - Lightweight and non-intrusive firewall
Tenable.io - Tenable.io Cyber Exposure platform helps to protect any asset on any computing platform and eliminate blind spots.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
AlienVault USM (from AT&T Cybersecurity) - AlienVault USM Anywhere delivers powerful threat detection, incident response, and compliance management for cloud, on-premises, and hybrid environments.
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.