DU Meter
DU Meter is a network bandwidth monitor for your computer.
21 Alternatives To DU Meter

Bandwidth Manager
Bandwidth management, bandwidth limiting and traffic shaping software for Windows
BitMeter
A feature-packed bandwidth meter for Windows, which includes a web interface for remote monitoring.
FreeMeter
Monitor network bandwidth (C#.NET 2k/XP+). Desktop and Systray graph.

GlassWire
Visualize network activity in detail, get notified when new apps access the network, look out for…

Little Snitch
Little Snitch is a firewall application that monitors and controls outbound internet traffic.
LoL Ping Checker
LoL Ping Checker (LPC) is a graphical tool showing your current ping delay.

NetBalancer
NetBalancer is a Windows application for local network traffic control and monitoring.
NetMeter
NetMeter (legacy)
NetTraffic
Essential network bandwidth monitor.

NetWorx
NetWorx is a simple and powerful tool that helps you objectively evaluate your bandwidth situation.
Network Activity Indicator
Network Activity Indicator displays the old ’two monitors’ icon in Windows 7 that flashes blue to show network activity in the System Tray.
Network Lights
Network Lights is a Windows program, which blinks keyboard LEDs (Light Emitting Diode) indicating outgoing and incoming network packets on network interface.
PRTG Network Monitor
An advanced network monitoring solution to monitor network up/downtime, traffic and usage.
Qustodio
Free parental control software. Monitor and track your child’s online activity. Block dangerous sites and protect kids from online bullying.
TinyWall
Lightweight and non-intrusive firewall

Traffic Shaper XP
Traffic Shaper XP is a free bandwidth limiter for Windows 2000, XP and 2003 Server.
TrafficMonitor
TrafficMonitor is a network monitoring suspension window software in Windows.

Windows 10 Firewall Control
Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.

cFosSpeed
cFosSpeed is a network driver, which attaches itself to existing Internet connections.
simplewall
Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on…

trafficWatcher
trafficWatcher is a small tool to monitor your network activity.