DownToDash - Meet fun people based on activities & discover events!
Overnight - Book a last minute room with locals, in seconds.
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Airbnb - Book unique places to stay and things to do.
Upcoming.org - A simple way to share and discover interesting events
FriendsTonight - Meet new friends to join your friends, tonight