There are a large number of Flash image galleries but sometimes Flash is not required or cant be used so we turn to Javascript and CSS. Here is a roundup of some of the better Javascript and Ajax based solutions to our gallery requirements …
(E)2 Photo Gallery Made With Mootools - (E)2 Photo Gallery is a open source gallery built with Mootools Javascript Library the compact, modular, Object-Oriented javascript framework. Designed to allow you to upload your photos to a desired folder, tell the (E)2 Photo Gallery what folder to look at and it will automatically load the images using PHP
jqGalViewIII - Here we have yet another photo / image gallery, except at this point it is only a proof of concept. I see a ton of photo galleries in Flash and see a lot of effects that just can’t be done in JavaScript, but a ton of effects that can be achieved
Zenphoto - Zenphoto is an answer to lots of calls for an online gallery solution that just makes sense
Imago - Imago is a small, simple and easy to use Ajax Image Gallery. Its plain JavaScript (using mootools) and uses no server side scripting
Modified Hoverbox Image Gallery - This following is a modified version of Nathan’s incredible Hoverbox Image Gallery. This version uses a single image for thumbnail/larger view and partially supports :active and :focus states for keyboard only users
Spry - Image Gallery made with the Spry framework
FrogJS Javascript Gallery - FrogJS is a simple, unobtrusive javascript gallery. It’s not a replacement for other thumbnail galleries like Lightbox JS, but a different way of showcasing galleries
slideViewer - slideViewer is a lightweight (1.5Kb) jQuery plugin wich allows to instantly create an image gallery by writing just few lines of HTML such as an unordered list of images
Photo Folder - PhotoFolder scans a given folder for JPEG files with any number of thumbnail sizes per image. If the resized images do not yet exist, it will automatically create the thumbnails for you
Pyxy - Pyxy-gallery is an AJAX image gallery in PHP and JavaScript, which optionally uses lightbox.js. It is designed to be an ultra-light-weight, “drop-in” image gallery
JonDesign’s SmoothGallery - Using mootools v1.11, this javascript gallery and slideshow system allows you to have simple and smooth (cross-fading…) image galleries, slideshows, showcases and other cool stuff on your website
Minishowcase - Minishowcase is a small and simple php/javascript online photo gallery, powered by AJAX that allows you to easily show your images online, without complex databases or coding, allowing to have an up-and-running gallery in a few minutes