http://kfm.verens.com/Version-0-5
to install for FCKeditor, download the zip, extract it in editor/plugins/, edit config.php to your satisfaction, and add the folling line to your fckconfig.js:
FCKConfig.Plugins.Add('kfm');
new features:
# New Languages
* French (thanks to Hubert Garrido)
* Spanish, thanks to Arathael (75)
* Dutch (thanks to Roy Lubbers)
# selected file can be changed using the left/right arrow keys
# you can edit plain-text files online
# caption-extraction from JPG files
# total rebuild of the directory panel
# recursive context-menus.
I'm in #kfm at irc.freenode.net if anyone wants to chat about it.
Kae