Before I switched to Mac, I used to love to use NetStumbler for Windows. It is a tool that allows you to find any WiFi network and learn a lot about them. This tool even lets you make note of GPS coordinates and do a little thing that people like to call WarDriving. Not that I would know anything about that.
- iStumbler – Allows you to find AirPort networks, Bluetooth devices and Bonjour services with your Mac. There is also a desktop widget.
- KisMAC – This is a complete wardriving app. Meaning it is GPS enabled and will map open WiFi hotspots and everything. Here is the latest Mac OS version.
Oh, and if you are still using Windows, Netstumber is too old and stale. Now there is inSSIDer. Go and get it.
Oh, and if anyone knows of others for either Mac or Win, please do share!