Tiny fck is a copy of TinyMCE with the Fckeditor image manager option. TinyMCE lacks a good image manager. There are some but you would feel that there is a lot missing in those. This is totally tinymce with the additional fckeditor image manager.
I am modifying the fckeditor code of tinyfck to show thumbnails of images instead of just listing their file names.
Follow this download link to get a copy of it http://freshmeat.net/projects/tinyfck/ or just search in google as tinyfck and choose a copy.