The best free alternative to NetStumbler is Vistumbler, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to NetStumbler and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to NetStumbler are Wi-Fi Info, Homedale, WiFi Analyzer - VREM and NetworkMiner.
Vistumbler is a wireless network scanner and mapping utility designed for Windows Vista and above
Very similar interfaces and functions. Still working with newer Windows versions and product is updated recently. NOTE: May be detected as a virus by some antivirus due to intrusion mode of this kind of tools.
Functions very similarly and even works on my Win8 installs.
Powerful network toolset packed into an Android app. Gathers and displays the information about the Wi-Fi network environment!.
With Homedale you can search for Wi-Fi / WLAN Access Points and monitor their signal strength. Use the detected access points with Google Geolocation and Mozilla Location Service to locate yourself.
![See an overview of all available access points with their signal strength, encryption [WEP/WPA/WPA2], speed and channel.](https://img.alternativeto.net/s/618x394/avif/8f3b1d9c-e2be-e311-8c57-002590a05f5f_2_full.png)
Optimize your WiFi network using WiFi Analyzer by examining surrounding WiFi networks, measuring their signal strength as well as identifying crowded channels.
NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can extract transmitted files and certificates from PCAP files containing HTTP, FTP, SMB, SMB2, TFTP and several other protocols.
Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system. Kismet will work with any wireless card which supports raw monitoring (rfmon) mode, and (with appropriate hardware) can sniff 802.11b, 802.11a, 802.11g, and 802.11n traffic.
NeoStumbler is an application for collecting locations of Wi-Fi networks, cell towers and Bluetooth beacons to Mozilla Location Services.
netsniff-ng is a free, performant Linux networking toolkit. The gain of performance is reached by zero-copy mechanisms, so that on packet reception and transmission the kernel does not need to copy packets from kernel space to user space and vice versa.
Wefi has compiled the world's largest collection of free and safe wifi hotspots in order to help you easily find and automatically connect to the best quality FREE and secured Wi-Fi, conserve your precious cellular data plan and battery life.
It appears now it's only an Android app
Network diagnostic and troubleshooting tool organizer with GRAPHICAL network map:
How strong is your WiFi signal? You can use the NETGEAR WiFi Analytics app to get advanced analytics that help you optimize your existing or newly extended WiFi network.
Germany
EU
Sweden
United States
Finland
Poland
closest thing to original netstumbler