WiFi Map - A crowdsourced list of routers and passwords
Wiman - Browse over 70 million free mobile WiFi hotspots
WifiMapper - Find free WiFi anywhere in the world
Café Wifi Search 🔍 - Find great cafés to work from, worldwide.
LocationAPI - Instantly locate any device w/ WiFi, celltowers & IP address
Wificoin - Pay-as-you-go inflight wifi in over 5000+ airplanes.