WordPress.org

"Simplest Gallery Plugin" is the simplest way to integrate WordPress' builtin Photo Galleries into your pages with nice visual effects.

WordPress has got a builtin Gallery functionality which is great and lets you create, organize and place images galleries in your pages and posts with great ease.

If your theme doesn't render the galleries properly, this little plugin adds a flavor of magic by rendering them with a fancybox jQuery effect at no effort. Just install, activate and experience the wonder of your WordPress galleries. More gallery styles can be added later with additional plugins, and you can create your own. See http://www.simplestgallery.com for this.