HTMLarea has an enhanced Image Handler written by Wei Zhuo [1]. It is based on PHP and uses GD or Imagemagick. It is not quite clear under which license the code is published; The HTMLarea itself is available under a BSD-like license.
The Image Handler allows to upload and treat images such as rotating, resizing etc. It runs as well under Mozilla as IE. A modified version is available for Coldfusion [2].
[1] http://www.zhuo.org/htmlarea/?view=flat
[2] http://huizen.ddsw.nl/bewoners/slopera/projects/projects.htm
