Keyshot is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is LuxCoreRender, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Keyshot and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Keyshot are appleseed (Free, Open Source), V-Ray (Paid), RenderMan (Free Personal) and Mitsuba (Free).
LuxCoreRender is a physically based and unbiased rendering engine. Based on state of the art algorithms, LuxCoreRender simulates the flow of light according to physical equations, thus producing realistic images of photographic quality.
appleseed is a modern, open source, physically-based rendering engine designed to produce photorealistic images, animations and visual effects. It provides individuals and small studios with an efficient, reliable suite of tools built on robust foundations and open technologies.
V-Ray 2.0 for 3ds Max is a complete rendering solution, which combines the power of the well-known V-Ray award-winning production rendering engine with the flexibility and exceptional speed of the interactive rendering system V-Ray RT and the even more impressive new V-Ray RT...
PhotoRealistic RenderMan, or PRMan for short, is a proprietary photorealistic RenderMan-compliant renderer. It primarily uses the REYES algorithm but is also fully capable of doing ray tracing and global illumination.
Physically based renderer. Mitsuba is an extensible rendering framework written in portable C++. It implements unbiased as well as biased techniques and contains heavy optimizations targeted towards current CPU architectures.
Pixie is an open source RenderMan renderer for generating photorealistic images. You can compile Pixie on Windows (using Visual Studio 2005), Linux and on OSX (using XCode or unix style configure script).