Not many people use elm directly but it has influenced the design of so many frameworks and libraries.
Right now I’m toying with the idea of building a GNOME application in rust, and the framework I’m using is relm4 which provides elm like abstractions over gtk-rs.
Previously I’ve built web applications with F# and elmish, which again provides elm like abstractions for building F# applications.
The Roc programing language is being developed because Richard Feldman wanted an Elm like experience in more places then just the front end.