Phoca Gallery is a fantastic image gallery for the popular Joomla! CMS, created by the Phoca group.
It requires a minimum of Joomla! 1.5.10 and PHP 4.4.1 with GD library to run and comes standard with everything you need from a photo gallery piece of software. It integrates very nicely with Joomla! and is extended by a variety of plugins, components, modules and themes in order to make it even more useful and integrate better into your site.
Featuring the ability to upload multiple images via either its Java or Flash uploader, Phoca Gallery is certainly a great way for sprucing up your site with some more images for your visitors!
Related Link: http://www.phoca.cz/phocagallery