3D Vikings - 3D printing and fulfillment on demand.
3D Hubs - Airbnb for 3D printing
Shapeways - Shapeways - 3D Printing Service and Marketplace
i.materialise - i.materialise is an online 3D printing service, community and marketplace.
Sculpteo - An online service that provides professional online 3D printing and laser cutting services for...
Stratasys Direct Manufacturing - Custom 3D printing services.