Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
MailtoUI.js - Enhance your mailto links with a convenient user interface.
Kiwi.com - Find and book the best low-cost flights all around the world
Mailjoy - Delightfully easy direct mail marketing. A DIY direct mail tool created for marketing and growth teams. Design, mail & track personalized direct mail postcards and letters. Digital marketers use Mailjoy to send data-driven mail campaigns.
App in the Air - The perfect companion for everyone taking a flight.
The Simple Postcard - Text a photo to mail it as a postcard