TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.
iStat Menus - "An advanced Mac system monitor for your menubar."
NetBalancer - NetBalancer is a Windows application for local network traffic control and monitoring.
Stats - Simple macOS system monitor in your menu bar.
NetTraffic - Essential network bandwidth monitor.
iStatistica Pro - System monitor. Reinvented. 💻 🖥