Voodoo Manufacturing - Fast, affordable, high-volume 3D printing
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Mockupify - Automate your print-on-demand product creation process
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Customily - Design, sell and print personalized products the smart way
Bigtent - BigTent is a web-based organization and communication portal for groups.