WideStudio is an Integrated Development Environment (IDE) for building window applications in C++, Ruby, Python an Perl for Windows, MacOSX, Linux, FreeBSD, SOLARIS and other unix and BTRON and T-Engine. This is open and free (under MIT/X Consortiun Lice
The goal of the OCaml-Java project is to allow seamless integration of Objective Caml and Java.
The ODT (OCaml Development Tools) project aims to be like the JDT (Java Development Tools) eclipse plugins. It provides IDE features for OCaml application developments. See more on http://ocamldt.free.fr (tutorial, installation notes and more).