Nominatim Provides worldwide forward / reverse geocoding No Yes Yes One Map, Singapore Singapore Land Authority REST API services for Singapore addresses apiKey Yes Unknown OnWater Determine if a lat/lon is on water or land No Yes Unknown Open Topo Data Elevation and ocean depth for a latitude...
Marketstack Free, easy-to-use REST API interface delivering worldwide stock market data in JSON format Weatherstack Retrieve instant, accurate weather information for any location in the world in lightweight JSON format Numverify Global Phone Number Validation & Lookup JSON API Fixer Fixer is ...