Free network monitor and protocol analyzer software for windows

MSNProtocol Analyzer (MSNPAnalyzer) is a network tool that can monitor (or capture, monitor) the sessions of MSN Protocol.
If you use this program in conbination with SwitchSniffer program, you can capture and see all the MSNP sessions including conversations and MSN commands.
Main features:
- MSNPAnalyzer can monitor 2 NICs or more at once.
- MSNPAnalyzer can show MSN commands and the procedures of connection.
- MSNPAnalyzer enables you to see all the conversions on the network.
- If MSNPAnalyzer is used in conbination with SwitchSniffer program, You can capture all see all the MSN protocols and conversations.
- It is very easy to make MSNPAnalyzer to work. Just run MSNPAnalyzer on any computer on your network, and start to monitor.
- MSNPAnalyzer parses, decodes, analyzing MSN protocol in real-time.
- MSNPAnalyzer enables you to viewing the contents, commands and sessions of MSN protocol on-the-fly

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.

D-Link Network Monitor 1 is created to be a smart tool with the ability to get real-time network information delivered right to your desktop. Monitor the status of your Internet, LAN, and WLAN settings from one simple window.

Requirements:

• Windows 95/98/Me/NT/2000/XP/2003 Server/Vista
• Yahoo Widget Engine

Dial-Up Networking Monitor shows the throughput on Windows 95/98 Dial-Up Networking and Windows NT RAS connections.
The throughput is shown in the form of a fully configurable graph window and as detailed statistics.
Dial-Up Networking Monitor will display statistics and a graph of the current Dial-Up Networking connection, including the current throughput and total, maximum and average bytes sent and received.