Womp - 3D Made Easy
Wannathis - 3d illustrations and freebies
Tool Print - From Design to Doorstep: Swift and Simplified 3D Printing.
Shapefest - A massive library of 3D shapes for everything!
AstroPrint - Slice, Store, and Print your 3D files from any web enabled device.
ccclaymoji - A fun little tool to make emojis that have a fun 3D-like effect.