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.
Nitro is a really easy to use, very customizable, and extensible ORM for CodeIgniter. It's pure PHP, which means you won't have to install any commandline tools to run it, just one mapping file (or as many as you like), which is as simple as defining a PHP array, and let Nitro create the classes and manage the relations.
Vunsy is a very easy content management system and a dynamic Web site designer that entirely removes the need for a Web design program. Its purpose is to enable the user to make a site quickly by using widgets and layouts. It allows you to assign permissions to every piece of content. These permissions can control such things as viewing and deleting the content.