3D Hubs - Airbnb for 3D printing
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Zazzy - Design and sell your own 3D printed jewelry
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Printful for Messenger - Create and sell print-on-demand merchandise with Messenger
ZBrush - ZBrush is a digital sculpting and painting software solution.