HotelTonight Escape - The best getaway deals for tonight (or the weekend)
FareUpThere - Earn rewards for your feedback on flights
Hotellook - Compare hotel deals from all the leading booking agencies
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
MakCorps - Hotel Price Comparison API
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.