The program uses the freely available WinPcap which provides access to the network traffic information. The program itself displays two different types of information in its interface. The Interface Traffic tab displays the overall bandwidth of a specific network interface or all network interfaces of the computer the software is running on. Process Traffic on the other hand offers a list of detailed process specific information.

The traffic monitor records traffic from all interfaces and connections by default. Users can enter different bandwidth thresholds and update intervals after they hit the stop button to pause the logging of traffic on the system. The program warns the user visually if the bandwidth threshold is exceeded.

Probably more useful than the overall bandwidth utilization are the information of the process traffic tab. Here you see a list of all running processes on the system with information like their process name and ID, local port as well as memory and cpu usage. Free Process Traffic Monitor furthermore lists the current send and received rate in Kbps for each process. There is unfortunately no option to access the overall traffic utilization of a process over time, as all information are displayed and updated in realtime.

That’s without doubt the biggest weakness of Free Process Traffic Monitor, and definitely inferior to monitoring software like Netlimiter, which despite it’s “lite” state offers those information.

Another missing feature is the ability to configure notifications, alarms and automatic commands like killing a process if it uses up more bandwidth than configured in the application. A third missing option is a filter to only display specific processes and not all of them. The display changes a lot at the default refresh interval of 10 seconds.

Windows users can use Free Process Traffic Monitor for two purposes. First, they can check the overall bandwidth utilization of the system, and second they can use it to check up on a specific process. Both only in realtime.

Windows users can download the free traffic monitor from the developer website. They also need to download and install WinPcap before they can use the software. (via)

Netlimiter 2 Monitor is a sweet software that displays all open processes and applications on the system detailing their incoming and outgoing bandwidth along with ports, IP addresses and process numbers. That’s basically the same amount of information that my previous favorite Currports is displaying.

The first difference is that Netlimiter Monitor has a history function where it is displaying which applications connected to the Internet before on your system. Great for quickly checking out if an app is among the list that should not be there.

It’s definitely a great application if you want to evaluate the bandwidth usage of a process or software. I used it to keep an eye on Skype to see if my computer was used as a Skype supernode.

The Pro version of Netlimiter adds some interesting functions like Traffic Shaping, Network support, Network Tools like Whois and Traceroute, Remote Administration and Advanced Rules.