Q:

Know of an OCAML IDE?

Know of an OCAML/CAML IDE?  Especially one that runs on Linux?

A:

Emacs in Caml mode, or Tuareg mode, or TypeRex mode.  TypeRex adds auto-completion to Taureg in emacs - a really nice feature for people who prefer the more graphical IDE's.

A:

There is Camelia. You can also integrate OCaml into Eclipse. Also in Emacs you can use ocaml-mode and tuareg-mode. 

A:

I vote OcaIDE. Now it has upgraded to v1.2.5. it become an up-to-date IDE (supporting ocaml 3.10-3.11, especially ocamlbuild, which is a great time-saver) and armed with rich, stable features.
I've installed OcaIDE on an eclipse 3.5(Galileo) and it works well.

