The purpose of a WiFi stumbler is to search all network characteristics from the outside. If you are in a new location and scanning for a suitable wireless access point to connect to, a tool that requires an internet connection wouldn’t do much good.

Unfortunately, there aren’t any online WiFi stumblers because, in order to use a website, you already need to be connected to a router.

Homedale This free wireless network detector offers a range of signal strength representations, including a time series graph and a bar chart.

NetSpot A detection and planning tool for wireless networks that shows a signal heatmap overload on a floorplan that you load into the system.

WirelessNetView A free tool from Nirsoft that detects and monitors wireless signals, including Bluetooth.

Cain & Abel A free package of tools that is frequently used by hackers and includes a wireless signal detector and analyzer.

Ekahau Heatmaps A range of wireless discovery tools including a physical device and apps for smartphones.Acrylic A series of WiFi discovery tools, including a stumbler, a heat map plotter, and a wireless network planning tool.LizardSystems Wi-Fi Scanner This easy-to-use wireless network scanner is free for personal use and offers essential information on each channel that shows activity.This is a straightforward tool that requires no training to use. NetStumbler EDITOR’S CHOICE This free tool provides wireless channel tracking and information about the AP that is managing signals on them.Here is our list of the best Wifi Stumblers for Windows and Mac: So, WiFi stumbler provides two services: an assistant to find an uncluttered wireless network and provide information to help tune your own router. With this information, you can choose a less crowded signal and set your router to a clearer channel. It can also show how many other users currently use the network.

A WiFi stumbler detects the available channels and signal strength of wireless routers within range.

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