TinyWall - Lightweight and non-intrusive firewall
Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Google Cloud Platform Security Overview - Cloud Workload Protection Platforms
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.
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.