Shapeways - Shapeways - 3D Printing Service and Marketplace
Muglaunch.com - Design and sell print on demand products easily @ Muglaunch
3D Hubs - Airbnb for 3D printing
Voodoo Manufacturing - Fast, affordable, high-volume 3D printing
i.materialise - i.materialise is an online 3D printing service, community and marketplace.
Customily - Design, sell and print personalized products the smart way