VeeR VR - Global VR video community
Shapeways - Shapeways - 3D Printing Service and Marketplace
GatherinVR by Queppelin - GatherInVR is a platform for VR meetings and VR conferences and can be customized for any business or company.
3D Hubs - Airbnb for 3D printing
VRChat - Create and play in virtual worlds with others
i.materialise - i.materialise is an online 3D printing service, community and marketplace.