Actually it's the one that the http://www.snafu-comics.com
guy uses on his sites best as I can tell. He has it up for download at http://www.snafu-comics.com/php.php
. I've found it very easy to use and to install thusfar, and rather like it. The format of the filenames isn't all that different from the ones keenspace used so it was easy to change them to work with the system. I'm not sure what sort of license he has going on it, but truth be told it isn't a very complicated setup. With the programing experience I have I would say that I could learn to write something similar fairly quickly, but why bother when it's out there for free?
The site is just about finished though, there is one or two more things I plan on doing before it is ready for the switchover. I'm really happy with how the gallery system has turned out, I'll likely also set up a blog and a new forum before I call it quits.