HLogoZ Lite is a script that automatically changes a logo or other image for specific holidays or other dates. There is also a version HLogoZ available as a plugin for WordPress: HLogoZ-WP. It allows you to specify your own custom dates or holidays on which the logo should be changed. It has three modes: image, Flash, and text. All modes can be used together.
Tephlon is an easy PHP persistence library. It has a highly modular OOP design and a no-SQL storage system. It stores any object or variable safely and tidily on disk for fast access. The API is meant to be easy and fast to learn. It features Java-style key-value maps, namespaces, easy Codeigniter integration, programmable lifetime of records, a multi-driver architecture, reliable and well-tested code, and easy incremental backup of data with SVN or GIT.
Dextep Template Engine implements a template engine based on regular expression replacements. It can process a template with marks that define placeholders or sections using regular expressions to locate and replace those marks. Currently, it supports marks that define expressions, conditions, loops, and sub-templates files. The templates may compiled and cached to avoid processing the templates again in the future.