Cameleon is not maintained any more. It has been splitted in various parts. Have a look at these separated projects:
Latest release is 1.9.21 (2011-01-13).
Do not hesitate to download the nightly snapshot of the subversion trunk, with more features and bug fixes:Nightly snapshot.
1.9.21 is available [13 Jan 2011]
Libraries Okey, Configwin, Gtksv_utils and gtk utilities (Gdir, Gmylist, Gmytree, Gstuff) are now in a different library out of Cameleon2: Lablgtk-extras (hosted on ocaml forge). Library Config_file is now out of Cameleon2 and hosted on ocaml forge.
1.9.20 is available [17 Jun 2010]
Changes: new commands in ocaml-mode, compatibility with ocaml 3.12.0, various fixes and improvments.
1.9.19 is available [24 Sep 2009]
Changes: now use GtkSourceView 2.X, new multi-clipboard view in Chamo (the view is called "multiclip"), new Custop module (to create Gtk interface to toplevel programs), new Ed_outputs module (to display various command outputs), ocamlbuild support in ocaml-mode, various things I don't remember of, lots of minor fixes.
Cameleon2/Chamo at the 2nd OCaml Meeting [05 Feb 2009]
A talk was given about Cameleon2 and Chamo at the second OCaml Meeting, in Grenoble on 4th february 2009. The slides are available.
1.9.18 is available [02 Feb 2007]
Bug fixes and enhancements in Chamo: Handle the encoding of files (ability to specify an encoding when opening a file, ability to change the encoding of a file), keep the date when saving a file to be able to detect modifications of a file while it is edited in chamo, keep some buffer attributes in the chamo files, like the encoding, the mode, ... Cameleon does not act as server by default (new command cam_start_server). OCaml-RSS is now included in Cameleon.
1.9.17 is available [27 Nov 2006]
Bug fixes and enhancements in Chamo. Search, query-replace and completion are available in Chamo, with regular expressions based on PCRE.
1.9.16 is available [10 Oct 2006]
The chamo editor is included and usable in cameleon. Many fixes and enhancements.
1.9.15 is available [06 Oct 2006]
Cameleon now includes chamo, a powerful text editor with OCaml as scripting language.
1.9.13 is available [10 May 2006]
A new configuration process which uses an OCaml script to detect required tools and libraries. Fixes and enhancements.