NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
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.
NetWorx - NetWorx is a simple and powerful tool that helps you objectively evaluate your bandwidth situation.
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Zabbix - Track, record, alert and visualize performance and availability of IT resources