Free network traffic monitor software for windows

Network Traffic Generator is used to check what massive amounts of traffic of certain type will do to an intervening network Network Traffic Generator does not try to measure throughput or response times.
Network Traffic Generator has been made with the question in mind: If 100 clients does simultaneous TCP transfers for 2 days, will my router break? Or can I configure my firewall while 50 people are doing large TCP transfers through the device?
Who should use it?
Responsible software developers in a test environment that needs to know how their router/firewall/VPN holds up against continuous high traffic loads. You should be careful to use this tool only in environments where it will not affect the normal day to day operations of your coworkers.

Free Website Traffic Monitor 1 allows you to monitor your Web pages activity and store reports in Microsoft access database format. It will record useful information about your Web site activity. You can select what page you want to monitor. All report is stored in a Microsoft access database format (*.mdb). You can modify, alter, distribute at your own risk.

Qt Network Monitor is built in C++ and uses the underlying library libpcap / WinPcap to gather information about the network traffic. The GUI is built in QT and faily independent from the implementation of the device listener.
Qt Network Monitor is a open source bandwidth monitor written using Qt and LibScp/WinScp. Works well under Linux too though you have to compile it yourself.The application allows to monitor a device. You start the program, chose a device and put the application to the tray. You can then know how much bandwidth you are taking at any time.

Net Monitor shows your current network traffic as text and history graph.
It is resizeable, colorizeable and some other nice options.
It use the fast WMI API/COM instead of the slow runCommand("netstat -e"). In the next versions it will be OS independent

Microsoft Network Monitor 3.3 offers an effective tool which helps you to capture network traffic, view and analyze it.

Major Features:

1. Be decoupled from the parser set.
2. To install :
   • Run the setup.exe for the platform you are installing.
   • You will be prompted first to install the core engine.
   • Follow the installation directions.
   • Make sure you close existing instances of netmon.exe, nmcap.exe and any running NMAPI applications.
   • Next you will be prompted to install the parser package.
   • Follow the installation directions.
     

Requirements: none

UPnP Gateway Traffic Monitor looks for an UPnP compatible gateway in the network and then constantly displays its traffic UPnP Gateway Traffic Monitor looks for an UPnP compatible gateway in the network and then constantly displays the traffic that goes through it.
UPnP Gateway Traffic Monitor is a small program, easy-to-use and simple to understand, that also doesn`t require any installation.