Real-time PathTracing with global illumination and progressive rendering, all on top of the Three.js WebGL framework. Click here for Live Demo: https://erichlof.github.io/THREE.js-PathTracing-Renderer/Geometry_Showcase.html
Why do you think that https://github.com/otaku-codes/3d-Teleporter-in-Three-JS is a good alternative to THREE.js-PathTracing-Renderer