Cycles is Blender’s ray-trace based production render engine and in development since 2011. It was originally developed by Brecht van Lommel, and is maintained by an active team of developers today. Since its release as Apache 2.
Radeon ProRender (formerly AMD FireRender) is a powerful physically-based rendering engine that enables creative professionals to produce stunningly photorealistic images. Built on highly efficient, high-performance Radeon Rays technology, Radeon ProRender’s complete, scalable...
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.
The program currently runs on Linux, MacOS X and Mic.
YafaRay is a free open-source montecarlo raytracing engine released under the LGPL 2.1 license. Raytracing is a rendering technique for generating realistic images by tracing the path of light through a 3D scene.
Intel OSPRay is an open source, scalable, and portable ray tracing engine for high-performance, high-fidelity visualization on Intel Architecture CPUs. The purpose of OSPRay is to provide an open, powerful, and easy-to-use rendering library that allows one to easily build...