iStumbler is a free, open source tool for finding wireless networks and devices with your AirPort or Bluetooth equipped Macintosh. iStumbler combines a compact user interface with a real time display of signal strength and complete debugging information.

Download iStumbler Release 89 (148K) for Mac OS 10.3 (Panther)
Requires Mac OS 10.3 with AirPort, AirPort Extreme or Bluetooth.

Release 89 updates the plugin interface to support logging and other cross-plugin communication, and improves the Log plugin which can now selectively display notifications based on user preferences. The Change Log has all the details.

Beginning with Release 90 you can support iStumbler by subscribing to new released. For only $1 per release, subscribers will receive copies of iStumbler via email 24 hours before the general release.

Visit the iStumbler Shop and get cool logo wear and wireless tools.

View the To Do List to see features in development. Visit the Downloads page to get a copy of the Source Code and start developing for iStumbler today!

iStumbler is available under a BSD Style Open Source License. You can download iStumbler source code. (3.5M), modify it freely and submit patches to me for consideration.

Send me an email to suggest new features or to report a bug that's not already on the Bug List.

Download iStumbler 82 (672K) for Mac OS 10.2 (Jaguar)
Requires Mac OS 10.1 with AirPort or AirPort Extreme.

Release 82 updated the user interface and fixed several bugs. It is the last Jaguar build of iStumbler.