iwScanner Alternatives

Official source of information about Netstumbler.

inSSIDer Essential makes it easy to maintain small business WiFi.

TCPEye is an easy-to-use monitoring application that will display a list of all network processes.

Technitium MAC Address Changer (TMAC) is a freeware utility to instantly change or spoof MAC Address of any network card (NIC).

NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting

Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

Netcat is a featured networking utility which reads and writes data across network connections...

SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers.

Network diagnostic and troubleshooting tool organizer with GRAPHICAL network map:

Packetyzer provides a Windows user interface for the Ethereal packet capture and dissection library.

An advanced network monitoring solution to monitor network up/downtime, traffic and usage.

With Homedale you can search for Wi-Fi / WLAN Access Points and monitor their signal strength.