Mobilizon - A free and federated tool to get our events off Facebook
Cool Cousin - Shaking up the travel world with good old human connection
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
FriendsTonight - Meet new friends to join your friends, tonight
DownToMeet - DownToMeet is a platform to organize, find, and attend group events.
Overnight - Book a last minute room with locals, in seconds.