What are some alternatives?
When comparing Booking.com and KAYAK, you can also consider the following products
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.
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Wander - Find travel destinations according to your budget
Momondo - Find cheap flights with Momondo.
Foursquare - Foursquare is all about helping you find new ways to explore your city.
Google Flights - Find cheap flights in seconds, explore destinations on a map, and sign up for fare alerts on Google Flights.