I was looking into this question a few weeks ago and couldn't find any libraries I would use in typical applications (eg. background jobs, etc) implementing Ractors.
There are occasional comments in GH issues discussing the possibility of implementing Ractors, but nothing material.
Feel free to email me @ the address in the commits if you have questions. I like Ractors a lot and want to see them succeed!
Not from what I have seen, It’s kinda risky because the fact that Ractors still is in experimental stage means that there couls be major breaking changes at any time, both how you use it and internally.