iStumbler is the leading wireless discovery tool for Mac OS X, providing plugins for finding AirPort networks, Bluetooth devices and Bonjour services with your Mac.

Release 95 adds the Spectrum Widget which displays the signal strength history of all visible wireless networks, graphically showing overlapping networks and performance trends. The Bonjour plugin is updated for Tiger to support wide-area Bonjour and adds a database of more than two hundred Bonjour service types.