What are some alternatives?
When comparing Clara.io and V-Ray, you can also consider the following products
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Keyshot - KeyShot 3D rendering and animation software is the fastest, easiest way to create amazing, photographic visuals of your 3D models. Enter your search in the box aboveTryYour download of KeyShot is only moments away.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
MODO - Modo by Foundry brings you the next generation of 3D modeling, texturing and rendering tools in a powerful integrated software package.
Unity - The multiplatform game creation tools for everyone.
ZBrush - ZBrush is a digital sculpting and painting software solution.