Coppermine

From the official Coppermine website:

Coppermine Photo Gallery is a picture gallery script. Users can upload pictures with a web browser or Windows XP Web Publishing Wizard (thumbnails are created on the fly), add comments, send e-cards, rate pictures and have their own gallery. The admin can manage albums/pictures/comments and batch add pictures that have been uploaded by FTP. The script has a theme system and is available in the following languages : Bosnian, Chinese (traditional and simplified), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Italian, Japanese, Norwegian, Polish, Portuguese (standard and Brazilian), Russian and Spanish. The script uses PHP, a MySQL database and the GD library (version 1.x or 2.x) or ImageMagick to make the thumbnails. An install script makes the installation very fast and easy.

http://coppermine-gallery.net/

To learn more about this image gallery solution and all the other image gallery solutions that Wallanet offers go here: http://www.wallanet.com/open_source_packages/image_galleries