Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Patook - Platonic Friend Making and Community App
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Let's Try Sports! - Let's Try Sports is a website for finding sports activities in your local area: tennis...
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Far or Near - Far or Near™ is a privacy-oriented social network that helps you connect with others who share your...