iStumbler is a wireless network discovery tool for Mac OS X, Windows, and Linux. It allows users to quickly identify and troubleshoot wireless networks and other Wi-Fi devices in their vicinity. iStumbler provides detailed information about the available networks, including SSID, MAC address, signal strength, channel, encryption type, and more. It can also be used to detect rogue access points, interference from other nearby networks, and other network problems. Additionally, iStumbler is capable of tracking the location of wireless networks and mapping them on Google Maps.
Discontinued The program is no longer updated. The latest version, 0.4.0, released in April 2004, can still be downloaded from the official website.