My own online photo gallery system. Built in PHP with a MySql back end, it's all about speed and versatility. You can have multiple galleries (groupings of photos) which themselves can be grouped together under albums. It has a commenting system, templates, and the tools to administer it all. But best of all, getting images into galleries is a piece of cake. All you have to do is use an ftp program (smartftp
for windows is awesome and free) to drag and drop your images into the appropriate folder. Thumbs are generated automatically, and the newly updated photo shows up right where it should. You can download it if you're interested in trying it out. Requires PHP 4.3.8 or greater and MySql 4.0.20 or greater.