AwardCat - Make your miles easy to use ✈️
Design Principles - An open source repository of design principles and methods
Google Flights - Find cheap flights in seconds, explore destinations on a map, and sign up for fare alerts on Google Flights.
UX Research Field Guide - Your map to the world of UX research 🌏🕵️♀️
FlightCar - Free airport parking by renting your car to fellow members
Business-Driven Digital Product Design - A guide on how to create influential user experience