None exist. So far the best solution is to use Emacs with [2] * merlin-mode, for autocompletion * ocp-indent, for external code formating... think running gof

None exist. So far the best solution is to use Emacs with [2] * merlin-mode, for autocompletion * ocp-indent, for external code formating... think running gofmt on every enter press (surprisingly, it's fast enough unless your file is 2k lines long) * tuareg-mode (everything else, REPL etc.) * flycheck-ocaml for syntax checking The "real" IDE plugins aren't even close and that's saying a lot since the hodge-podge of addons I just listed isn't The default Emacs user experience is awful so if you're a Vim user, just install the "evil" package and enable it inside Emacs by doing M-x evil-mode, then you have Vim inside Emacs. Or use Vim, but the experience isn't as complete w.r.t. tooling[3]. There's always Spacemacs as well[1]. [1] https://github.com/syl20bnr/spacemacs https://github.com/syl20bnr/spacemacs [2] https://github.com/the-lambda-church/merlin/wiki/emacs-from-scratch https://github.com/the-lambda-church/merlin/wiki/emacs-from-... [3] https://github.com/the-lambda-church/merlin/wiki/vim-from-scratch https://github.com/the-lambda-church/merlin/wiki/vim-from-sc...