[bumborass]

Hopper (flight price prediction/flight purchase app)

GTFO (get the flight out, last minute cheap round trip flights)

HotelTonight (PM me if you want my code for 25 bucks off)

Couchsurfers (I just go to meetings, good way to game locals/foreigners and meet people to hang out with)

Been (tracks all the countries you've been to, plus US states)

Airbnb

Hostelworld

Google Translate

SeatGuru (people's reviews of airline seats and what not)

TripAdvisor