What3Words

Geocoding

Three words as rememberable and unique coordinates worldwide

API KeyHTTPSCORS ?

Auth

apiKey

HTTPS

Yes

CORS

Unknown

API URL

IPstack

Locate and identify website visitors by IP address

ipapi.com

Real-time Geolocation & Reverse IP Lookup REST API

Actinia Grass GIS

Actinia is an open source REST API for geographical data that uses GRASS GIS