Laravel - A PHP Framework For Web Artisans
Booking.com - Find your next stay. Search deals on hotels, homes, and much more...
Fat-Free - PHP micro-framework designed to help you build dynamic and robust Web applications - fast
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
Slim Framework - Slim is a PHP micro framework that helps you quickly write simple yet powerful web applications and APIs.
Sygic Travel Maps - Itinerary planner for independent travelers