iStumbler is a free, open source tool for finding wireless networks and devices with your AirPort equipped Macintosh. iStumbler combines a compact user interface with a real time graph of signal strength and complete debugging information such as network type, name and mac address. Real-time visual feedback of signal strength and encryption allows you to quickly find open networks, perform site surveys or just have a look at your wireless neighborhood.
Download iStumbler 85 (100K) for Mac OS 10.3 (Panther)
Release 84 completely remade iStumbler into an extensible, high performance and indispensable wireless scanning utility. Plugins provide unprecedented flexibility, aggressively multi-threading improves performance and iStumber now monitors the network you've joined as well as nearby networks providing twice as much information.
Release 85 fixes a crashing bug reported by some users, tightens up memory management and correctly handles forgotten nodes. The Change Log has all the details.
View the To Do List to see features in development. Visit the Downloads page to get a copy of the Source Code or the Plugin SDK and start developing for iStumbler today!
iStumbler is available under a BSD Style Open Source License.
You can download iStumbler source code. (6M), 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)
Release 82 updated the user interface and fixed several bugs. It is the last Jaguar build of iStumbler.
All versions require Mac OS 10.1 or better and an AirPort or AirPort Extreme Card
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