Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Muglaunch.com - Design and sell print on demand products easily @ Muglaunch
Facebook Local - Discover places to go and events happening near you
Customily - Design, sell and print personalized products the smart way
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Voodoo Manufacturing - Fast, affordable, high-volume 3D printing