Website with many printable parts. Generally pretty safe for students. Be sure to visit the Education link at the top
Free and paid printable parts resource. May not be safe for students.
Free and paid printable parts resource. Not safe for students. Some beautifully designed resources.
SketchUp
Sculptris
Fusion 360
Maya
Blender
OpenSCAD
ZBrush
Shapr3D: Design on the iPad
Sculptura: Design on the iPad
Putty 3D: Design on the iPad
MeshMixer
Safety Tips for FDM/FFF 3D Printers - 3DP101 from Maker's Muse
Astroprint: Create an account to use the tools on this site.
TinkerCad: Autodesk has not accepted our MOA, so be aware that this tool may no longer be allowed in WSD soon!