I've released the PHP script I've been developing to power the gallery section of my site under a public domain (i.e. free) license. It's not for everyone; you should be comfortable with editing XML and HTML files with a text editor, as well as using FTP to upload files to your webhost. (And of course, you need to have a PHP-enabled website to use it on!)

Still, I think there are lots of web-savvy artists out there who don't want to write their own from scratch, but aren't afraid to get their hands a little dirty with editing XML and HTML files.

Once you understand how it works, it's pretty easy to use. Then making design changes to an entire gallery is very easy, as is adding new images to the gallery.

Get it from my site: [link]

Galleries I've been using it for: [link]