PHP Photo Gallery is a powerful photo gallery script. It offers easy installation and easy management. It can create an online photo gallery with unlimited albums, subalbums, and photos. It can rotate, crop, lighten, darken, blur, and otherwise modify photos online. It allows you to upload many images at once. It supports watermarking with an image or text, user comments and ratings (optional), automatic thumbnail generation, template driven customization, interactive slideshows, the ability to extract EXIF data, and integrated search engine optimization, and RSS feeds. It can show random photos, the latest photos, or favorite photos.
"fgallery" is a static photo gallery generator with no frills that has a stylish, minimalist look. It shows your photos, and nothing else. There is no server-side processing, only static generation. The resulting gallery can be uploaded anywhere without additional requirements and works with any modern browser.
tmphoto is a Web photo gallery with a fairly advanced metadata structure, allowing photos to be described in terms of place, category, persons in the photo, and events. The places, categories, persons, and events can be further described. It offers a nice browsing interface based on the metadata.