If anything out there pushes ocaml out of the picture for me it is the parallelism story. While the Rpc_parallel sounds like an improvement, ocaml is still significantly behind the times on parallelism.<p>It is such a shame too. I would probably be using ocaml every day if it weren't so terrible at it. I pray for a day where ocaml's type safety, composition, and single-core performance were met up with the robustness, safety, ease-of-use, and speed of erlang's parallelism model.