There is another that is also quite mature that will render most Three.js scenes:

https://github.com/gkjohnson/three-gpu-pathtracer

Demos here:

https://gkjohnson.github.io/three-gpu-pathtracer/example/bun...

This one is also an official Three.js example:

https://threejs.org/examples/?q=path#webgl_renderer_pathtrac...