MyPostcard - Send real photo postcards and greeting cards - worldwide, from any place to anywhere.
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Fizzer - Send a personalised postcard with your photos. Holiday cards, thanks, greetings, invitations, birthdays and announcements.
Kiwi.com - Find and book the best low-cost flights all around the world
Felt for iPhone - Handwritten cards for the modern world
App in the Air - The perfect companion for everyone taking a flight.