WiFi Map - A crowdsourced list of routers and passwords
HyperTrack - Build logistics apps that feel like the future
Get Free Fucking WiFi - Find the best fucking WiFi just around the corner.
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Café Wifi Search 🔍 - Find great cafés to work from, worldwide.
LocationAPI - Instantly locate any device w/ WiFi, celltowers & IP address