MakCorps - Hotel Price Comparison API
HotelTonight Escape - The best getaway deals for tonight (or the weekend)
Gopher - Better hotel deals automatically, every time + cash back
TripRebel - Book your hotel now & get a refund when the price drops
Hopper - Hopper is the #1 most downloaded travel app in North America! We aspire to be the world’s best — and most fun — place to book travel.
ONE:NIGHT - Last minute reservations at only the best hotels