Transportr - The public transport companion that respects your privacy and your freedom.
Google Places API - Google Places API is a best-in-class platform that offers a complete information about multiple places using HTTP requests.
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
Foursquare Places API - Foursquare Places API is an online platform that offers the best location-based experiences for your facilitation.
IDOS - Trains + Buses + All Public transport - Search for connection
OsmAnd - Global mobile map viewing and navigation for online and offline OSM maps