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Kerkythea logo
Kerkythea is capable of rendering photorealistic caustics and global illumination.
Kerkythea is capable of rendering photorealistic caustics and global illumination.
Developer(s) Ioannis Pantazopoulos
Stable release
Kerkythea 2008 Echo / October 18, 2008; 9 years ago (2008-10-18)
Operating system Linux, OS X, Microsoft Windows
Type 3D Graphics Software
License Freeware

Kerkythea is a standalone rendering system that supports raytracing and Metropolis light transport, uses physically accurate materials and lighting, and is distributed as freeware. Currently[when?], the program can be integrated with any software that can export files in obj and 3ds formats, including 3ds Max, Blender, LightWave 3D, SketchUp, Silo and Wings3D.


Kerkythea started development in 2004 and released its first version on April 2005. Initially it was only compatible with Microsoft Windows, but an updated release on October 2005 made it Linux compatible. As of January 2016, it is also available for Mac OS X. In May 2009 it was announced that the development team started a new commercial renderer, although Kerkythea will be updated and it will stay free and available. A new version called 'Boost' has been released in 2013.


There are 6 official exporters for Kerkythea.

  • Blend2KT
  • Exporter to XML format
3D Studio Max
  • 3dsMax2KT 3dsMax Exporter
  • Maya2KT Maya Exporter
  • GMax2KT GMax Exporter
  • SU2KT SketchUp Exporter
  • SU2KT Light Components


Supported 3D file formats

  • 3DS format
  • OBJ format
  • XML (internal) format
  • SIA (Silo) format (partially supported)

Supported image formats

  • All supported by FreeImage library (JPEG, BMP, PNG, TGA and HDR included)

Supported materials

  • Matte
  • Perfect reflections/refractions
  • Blurry reflections/refractions
  • Translucency (SSS)
  • Dielectric material
  • Thin glass material
  • Phong shading material
  • Ward anisotropic material
  • Anisotropic Ashikhmin material
  • Lafortune material
  • Layered material (additive combination of the above with use of alpha maps)

Supported shapes

Supported lights

  • Omni light
  • Spot light
  • Projector light
  • Point diffuse
  • Area diffuse
  • Point light with spherical soft shadows
  • Ambient lighting
  • Sky lighting (Physical sky, SkySphere bitmap (normal or HDRI))

Supported textures

  • Constant colors
  • Bitmaps (normal and HDRI)
  • Procedurals (Perlin noise, marble, wood, windy, checker, wireframe, normal ramp, Fresnel ramp)
  • Any weighted or multiplicative combination of the above

Supported features

Supported camera types

Supported rendering techniques

Application environment

  • OpenGL real-time viewer (basic staging capabilities)
  • Integrated material editor
  • Easy rendering customization
  • Sun/sky customization
  • Script system
  • Command line mode

See also[edit]

  • YafaRay, free and open-source ray tracing software that uses an XML scene description language.
  • POV-Ray, free and open-source ray tracing software
  • LuxRender, free and open-source "unbiased" rendering system

External links[edit]