Plogger is the next generation in open-source photo gallery systems. A web application not bloated with superfluous features or complicated configuration settings. Plogger is a simple yet powerful tool ? everything you need to share your images with the world. Plogger is your photos integrated into your website, a fully featured photo sharing package with an attractive and easy to use administrative interface that makes managing your galleries a breeze. Integrating our gallery software into your website is as easy as inserting three lines of PHP code. And did we mention the price? Absolutely Free. Plogger requires a server setup with at least MySQL v3.23, GD1.0, and PHP4.

http://www.plogger.org