Booking.com - Find your next stay. Search deals on hotels, homes, and much more...

UserTesting.com - Usability testing has never been easier. Get videos of real people speaking their thoughts as they use websites, mobile apps, prototypes and more!

Sygic Travel Maps - Itinerary planner for independent travelers

Userbrain - Easy, fast, and affordable user testing for websites and prototypes.

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.

userinput.io - Get on-demand feedback for your app, website or idea. Learn how to improve by hearing real opinions.