Booking.com - Find your next stay. Search deals on hotels, homes, and much more...
Gopher - Better hotel deals automatically, every time + cash back
BusinessHotels.com - Book Hotels for Business & Corporate Travel
Agoda YCS for hotels only - Agoda YCS for hotels only is a traveling app that comes up with features to help users in minimizing their hotel booking efforts by providing them with a large number of choices all around the globe.
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.
HotelTonight Escape - The best getaway deals for tonight (or the weekend)