it is a file upload system, new in Rails 5.2, similar to Arc Ecto.

It also allows to switch platform easily, like switching from local, to aws, to google cloud IIRC.

Did You have a look at Arc Ecto @pillaiindu ?

Why do you think, Belt is immature? Have you had any problems with it so far? It works fine in production for me
(Disclosure: I’m the author of Belt)

So its true the Arc maintainer is looking for help for a long time without much success. But most of the open issues are feature or support requests, not actually problems. We’re using arc_ecto in production without issues and did find it very convenient and easy to use. What are the actual problems people have had while trying to use it?