Citrasoda is a project mainly written in PHP, it's free.
An extremely lightweight, php-based micrologging platform that stores it's data in XML, no database required
Citrasoda
Tim Habersack
Citrasoda is a web-based tool to record notes. Supports tagging, and custom elements. Also sports a wicked cool retro look thanks to the font 03 from http://04.jp.org/.
Use the config.php file and change the password to your desired password. Also, for added security be sure to rename the two xml files, then make note of the changes in the config.php file. The config.php also contains the code for the custom elements.
Citrasoda by Tim Habersack is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.