It has a great concurrency support with lwt[1] and async[2] libraries. What it lacks is shared memory parallelism. There is a multicore runtime in active develo

It has a great concurrency support with lwt[1] and async[2] libraries. What it lacks is shared memory parallelism. There is a multicore runtime in active developement [3] (it also adds fibers and algebraic effects) [1] http://ocsigen.org/lwt/ http://ocsigen.org/lwt/ [2] https://janestreet.github.io/guide-async.html https://janestreet.github.io/guide-async.html [3] https://github.com/ocamllabs/ocaml-multicore/wiki https://github.com/ocamllabs/ocaml-multicore/wiki