Shapeways - Shapeways - 3D Printing Service and Marketplace
PICO-8 - Lua-based fantasy console for making and playing tiny, computer games and programs.
3D Hubs - Airbnb for 3D printing
Photon - The fastest way to build beautiful Electron apps using simple HTML and CSS.
i.materialise - i.materialise is an online 3D printing service, community and marketplace.
Beamable - Beamable provides an SDK that enables game makers to easily add social, commerce and content management features to their games with drag-and-drop prefabs inside Unity.