Trialware.
From Lifehacker (old version): "Leopard's built-in Airport utility doesn't do much except show you what Wi-Fi networks are nearby, and which require a password—but free utility AirRadar does much more. AirRadar detects available Wi-Fi networks (in my case, more networks showed up in AirRadar's list than in Leopard's default menubar drop-down), and displays more information like signal strength, last seen timestamp, channel, signal average, max, and min. Disconnect from networks without turning off your Airport card, get Growl notifications, and set the scan interval with AirRadar too. You can even save networks as favorites, instead of just hopping onto any old open network by default. If you've got a spotty signal you'll appreciate AirRadar's signal to noise line graphs, too. AirRadar is a free download for Mac only."
For an easier alternative to using these example, the [ESP8266HTTPClient library](https://github.com/esp8266/Arduino/tree/master/libraries/ESP8266HTTPClient) can be used (which also supports HTTPS via a SHA1 fingerprint).
four Austin wireless companies were able to attend and showcase themselves at the CTIA press event, ShowStoppers, at a 70% cost savings. Digby (aka 30 Second Software), edioma, Media Excel, and BrainMedia.
This is a map of known Austin wireless hotspots taken largely from the list at Austin Wireless City's site: http://www.austinwirelesscity.org/hotspot-list.php.
AutoAP is a script that continuously scans for open Wi-Fi connections, tests them for validity, and connects to the strongest signal. If the connection is lost, the script scans again and finds the strongest valid signal again, and maintains a continuous connection to the internet in a mobile or portable environment. The script paremeters are highly configurable, including ability to configure secure connections.
Workshop to create a sensor application over a WiFi Mesh network - GitHub - binnes/WiFiMeshRaspberryPi: Workshop to create a sensor application over a WiFi Mesh network