(E)2 Photo Gallery is an open source photo gallery. The current version is still in beta but I’ve tested it to work with Firefox 2, IE 7, and Safari 3. What’s cool about (E)2 Photo Gallery is that the user can change the “skin” of the gallery. It uses the mootools framework and PHP for the photo uploader and image auto-detection features.
MooPix utilizes the Flickr API to dynamically populate your image gallery with pictures from a Flickr account without the need to use server-side scripting.
5. Highslide JS
Highslide JS is an open source script that uses modal windows instead of pop-up windows to open larger versions of the thumbnail images. It’s free for non-commercial uses.
Flickrshow is another slideshow that allows you to access photosets, groups, and tags from Flickr. The current version has an improved caching feature which helps make the transition between images quicker and more fluid.
Galleria is an image gallery that uses the jQuery library. It’s distributed under the GLP 3.0 License which permits you to modify and re-package the script (granted that you abide by the terms and conditions of the license).
LightWindow 2.0 is an excellent choice for mixed media galleries because it also supports other file types such as Flash movies and video files.
easyALBUM prides itself for being an image gallery that uses “super clean markup”. It works well with CSS disabled and is compliant with current XHTML web-standards. It also allows the user to navigate through the gallery using keyboard shortcuts.
Image Transition Manager provides you 8 transition effects. It was tested by the developer in Firefox 2, Opera, and IE 6 and 7. As an additional measure, I tried it in Safari 3 (and it works). It was developed using the script.aculo.us effects library which in turn requires the Prototype JS framework.
ThickBox is a script built on top of jQuery. It’s designed to display images as well as other types of document objects. It has the capability of loading content via Ajax requests.
minishowcase gives you the ability to set the language used in your galleries, and it can be configured to detect the user’s language preferences. This image gallery uses PHP for the language selection and automatic thumbnail generation.