This application provides an integrated graphical interface for a set of tools that allows the measurement of QoS parameters over IPv4 and IPv6 networks.
Network Performance Meter (NetMeter) is an application which tries to solve these tasks in a flexible and modular way.
NetMeter was developed at UPC by the CBA (Broadband Communications Research Group) and is licensed under GPL. So you are allowed to modify the source code at your will.