Vistumbler is a free Windows software program that helps users scan for wireless networks and determine their signal strength. It is designed for use by IT professionals and others who need to know about the strength of the wireless signals in their environment. It does this by scanning for 802.11a, 802.11b, 802.11g, and 802.11n networks and displaying the results in a user-friendly format. The program also includes a variety of other features, such as an alert system that notifies users when a new network is detected, an SSID filter to help eliminate false positives, and an option to export the results to a CSV file. Vistumbler also provides a way to map the networks in an environment and identify potential security vulnerabilities.
Discontinued The program is no longer updated.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.