"A simple to use media and image gallery that bases galleries off a file folder structure. Auto Gallery is one of the simplest ways to add media to your website: It can display images, flash animations, flash games, movies and sound files." Version 2.65 beta is now available too.

"Yeah, ok, it’s another lightbox gallery plugin! But this one uses Christophe Beyl’s Slimbox – an ultra-lightweight implementation. Display images by category; either specified in the plugin options or deferred to one of the custom fields (or the article ID) so you can make article-based galleries. Show caption/alt text with the thumbnails, group the images, split them into navigable pages and style it all with copious dollops of CSS. The very lightweight and powerful mootools makes it quite impressive to watch as well."

Directory Gallery creates a JS-based gallery of all picture files found in a specified directory, with preloading and graceful degradation. A simple and easily styled way of showing off your images in Textpattern.