You can use the Windows version of Emacs and use the configuration files (* .el) provided with the OCaml source archive to turn Emacs into a powerful, if idiosyncratic, full tier.
You will find instructions in ocaml-3.11.1 / emacs / README. In particular:
Once you have launched the camera using Mx run-caml:
M-C-x caml C-c C-r C-c C-s C-c` goto , M-C-x