nDPI - nDPI is a ntop-maintained superset of the popular OpenDPI library.
netifyd - The open source netifyd engine performs deep packet inspection and analysis on network traffic.
Bandwidth Manager - Bandwidth management, bandwidth limiting and traffic shaping software for Windows
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
NetLimiter - NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.