NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can parse PCAP files and regenerate/reassemble transmitted files and certificates from PCAP files with HTTP, FTP, SMB, SMB2, TFTP and several other protocols.




The best free alternative to NetSpot is NetworkMiner, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to NetSpot and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to NetSpot are Homedale, WiFi Analyzer - VREM, Kismet and Vistumbler.
NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can parse PCAP files and regenerate/reassemble transmitted files and certificates from PCAP files with HTTP, FTP, SMB, SMB2, TFTP and several other protocols.




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://d4.alternativeto.net/swe_yqYeMIw-NqcKXxlhz8oUuGdLw-lrqES3bR-qtZo/rs:fill:309:197:1/g:no:0:0/YWJzOi8vZGlzdC9zLzhmM2IxZDljLWUyYmUtZTMxMS04YzU3LTAwMjU5MGEwNWY1Zl8yX2Z1bGwucG5n.jpg)

Optimize your WiFi network using WiFi Analyzer by examining surrounding WiFi networks, measuring their signal strength as well as identifying crowded channels.




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.




Vistumbler is a wireless network scanner and mapping utility designed for Windows Vista and above



Powerful network toolset packed into an Android app. Gathers and displays the information about the Wi-Fi network environment!.




The Free Wi-Fi Coverage Mapping Site Survey Tool
Ekahau HeatMapper is a free software tool for quick and easy coverage mapping of Wi-Fi (802.11) networks. It's the only free, easy-to-use tool that shows, on a map, the wireless network coverage in your home or small office.



Almost everyone thinks Ekahau HeatMapper is a great NetSpot alternative.
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.

NetStumbler is a tool for Windows that allows you to detect Wireless Local Area Networks (WLANs) using 802.11b, 802.11a and 802.11g. It has many uses:Verify that your network is set up the way you intended, find locations with poor coverage in your WLAN, detect other networks...



Designing a Wi-Fi network that meets user demands in your unique environment is easy. Use this intuitive, predictive heat-map tool to develop your predictive design to implement a robust Wi-Fi network.
The Xirrus Wi-Fi Inspector is a powerful tool for managing and troubleshooting the Wi-Fi on a Windows XP SP2 or later, Vista, or 7 laptop. Built in tests enable you to characterize the integrity and performance of your Wi-Fi connection. Applications include:

www.jwaves.io is online free service for Wi-Fi and DECT predictive surveys/ simulations. You can generate professional reports with RSSI heatmaps, floorplans, access-points.

You can make your heat map by attaching a flat image, it works correctly. Complete free functionality.