NetLimiter - NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.
Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
NetBalancer - NetBalancer is a Windows application for local network traffic control and monitoring.
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
Postman - The Collaboration Platform for API Development