Kiwi.com - Find and book the best low-cost flights all around the world
Nightler - Find the people. Live the night.
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Party with a Local - Party with a Local is a free app that connects travelers with locals that want to party.
Sygic Travel Maps - Itinerary planner for independent travelers
Discotech - Opentable for nightlife. Tickets, guest lists, and VIP.