NetLimiter - NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.
Gufw - Gufw is an easy, intuitive way to manage your Linux firewall.
NetBalancer - NetBalancer is a Windows application for local network traffic control and monitoring.
Bandwidth Manager - Bandwidth management, bandwidth limiting and traffic shaping software for Windows
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
Throttled Pro - Throttled Pro optimizes your internet connection and provides QoS (Quality of Service) to Mac OS X.