Erlang

Gleam is a statically-typed functional language that compiles to Erlang BEAM bytecode and JavaScript. It gives you OTP’s fault tolerance and distribution with Hindley-Milner type inference - the same type system family as Haskell and OCaml - without making you leave the BEAM ecosystem you already know. As of April 2026, the latest stable release is v1.15.3, and the ecosystem has matured to include a full HTTP server stack (Wisp + Mist ), database drivers, and a built-in language server. If you write Erlang or Elixir professionally, Gleam is worth your attention.