GPUOpen-LibrariesAndSDKs/RadeonProRenderBlenderAddon

Real-time GPU path tracing with an OpenUSD Hydra render delegate

Simple Open-source Ray Tracer

The Cycles Render Engine - official mirror

MoonRay is an open-source, award-winning, state-of-the-art production path tracing renderer, initially developed at DreamWorks and an active member project of the Academy Software Foundation.

An Open, Scalable, Portable, Ray Tracing Based Rendering Engine for High-Fidelity Visualization

Embeddable physically based renderer

Blender Integration for LuxCore

c-ray is a small, simple path tracer written in C

Embree ray tracing kernels repository.