City Guesser - City Guesser is a GeoGuessr alternative that uses real city footage. Get dropped into a random city and use surroundings like moving vehicles, people walking, and language to help you guess your location.

Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.

GuessWhere Challenge - GuessWhere Challenge is a geo-guess quiz game where the user will be sent to a random place (city, country, street.) around the world, and he needs to guess where he is at the moment.

Kiwi.com - Find and book the best low-cost flights all around the world

BigDataCloud.com - Essential APIs for eCommerce, ads, finance, CRM: IP Geolocation, Reverse Geocoding, Email/Phone Verification, Network APIs. Enhance user experience, data accuracy, and operational efficiency.

App in the Air - The perfect companion for everyone taking a flight.