HyperTrack - Build logistics apps that feel like the future
GeoSpark - Location tracking SDK with 90% less battery drain 🔋
ipstack - ipstack is a free, real-time IP address to location JSON API and database service supporting IPv4 and IPv6 lookup.
Pilgrim SDK - Foursquare's superpower is now available to all developers
LocationAPI - Instantly locate any device w/ WiFi, celltowers & IP address
Hit Me Up! - Get notified when your friends arrive/leave a location!