NetSpeedMonitor is described as 'Lightweight Network Monitoring Toolbar for your Windows Taskbar designed to be used on computers that run Windows XP, Windows Server 2003, Windows Vista or Windows 7. With NetSpeedMonitor you can monitor the current speed (up- and downstream) of your Network' and is a popular Network Monitor in the network & admin category. There are more than 25 alternatives to NetSpeedMonitor for a variety of platforms, including Windows, Mac, Linux, Android and Android Tablet apps. The best NetSpeedMonitor alternative is TrafficMonitor, which is both free and Open Source. Other great apps like NetSpeedMonitor are GlassWire, NetWorx, Sniffnet and NetSpeedTray.
Finally a good substitute for NetSpeedMonitor