For concurrency I found this green thread implementation which uses libev or select for io: http://ocsigen.org/lwt/2.5.1/manual/ http://ocsigen.org/lwt/2.5.1/m

For concurrency I found this green thread implementation which uses libev or select for io: http://ocsigen.org/lwt/2.5.1/manual/ http://ocsigen.org/lwt/2.5.1/manual/ Also, for parallelism, elsewhere in this thread this link was shared: https://ocaml.io/w/Multicore https://ocaml.io/w/Multicore