HotelTonight Escape - The best getaway deals for tonight (or the weekend)
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.
MakCorps - Hotel Price Comparison API
Pruvo Chrome Extension - Save money AFTER you book a hotel 💰
Hotellook - Compare hotel deals from all the leading booking agencies
Opaque - Reveal hidden hotel deals and save up to 60%