Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
FB Nearby Friends - Discover which Facebook friends are nearby or on the go
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
PING - PING (Partimage Is Not Ghost) is a free software Linux-based live CD ISO built upon the partimage...
Bigtent - BigTent is a web-based organization and communication portal for groups.
Nomad List - Find the best place to ❤️ live, 👩💻 work, and 💃 play