Horizon - Horizon is a realtime, open-source backend for JavaScript apps.
Overnight - Book a last minute room with locals, in seconds.
Nomad House - Houses around the world for nomads to live and work together
FriendsTonight - Meet new friends to join your friends, tonight
ViaHero - Don't plan your trip yourself, let a Hero come to the rescue
Facebook Local - Discover places to go and events happening near you