TinyWall - Lightweight and non-intrusive firewall
Zabbix - Track, record, alert and visualize performance and availability of IT resources
simplewall - Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on...
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.