Onshape
Blender
Sculptris
meshmixer
FreeCAD
SketchUp
ShapeShop
Sketchfab
Elementool
Jira
Onshape
ElementoolBlender - Blender is the open source, cross platform suite of tools for 3D creation.
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.
Sculptris - Sculptris: Enter a world of digital art without barriers.
meshmixer - meshmixer is an experimental 3D modeling tool for making 3D mashups without too much hassle.
FreeCAD - An open-source parametric 3D modeler
SketchUp - 3D for Everyone