NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
OpsDash - All-in-one solution for monitoring servers, services, uptime and databases. Curated Dashboards. Rule-based alerting.
NetWorx - NetWorx is a simple and powerful tool that helps you objectively evaluate your bandwidth situation.
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Monitornator - Server monitoring made simple