Cheetah3D

Cheetah3D is a computer graphics program for 3D modelling, animation and rendering.
Sketchfab

Sketchfab is an industrial design software tool is useful for ideation and for beginners in the industrial design field.
Sculptris

Sculptris: Enter a world of digital art without barriers.
Onshape

Onshape is the first full-cloud 3D CAD system. It runs in a web browser and on any mobile device.
K-3D

K-3D is free-as-in-freedom 3D modeling and animation software.
ZBrush

ZBrush is a digital sculpting and painting software solution.
Xara Designer Pro

Discover the only software you need for all your creative work: Powerful illustration and photo editing tools, flexible page layout and unrivalled WYSIWYG web design.