Ansel is a Horde photo gallery that provides functionality for managing unlimited photo galleries, with thumbnails, paging, EXIF data, and permissions on a per-gallery basis. It also provides a number of features not normally found in Web-based photo galleries, including cropping, resizing, rotating, watermarking, and greyscale effects.
EZPX is a lightweight photoblog engine with all the features you need and a user interface you'll love to use. It can be used as a standalone photoblog application or as a Flickr agent. It features an easy installer/upgrader that notifies you when an upgrade is available, support for templates, and much more.