Taab - Travel as a benefit™
Kiwi.com - Find and book the best low-cost flights all around the world
TRAVO - Instantly create end-to-end trips around your events.
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Sygic Travel Maps - Itinerary planner for independent travelers
TravelOffers - Departure city + budget = monthly email with flight offers