Nothing completely new in the article, but memcached looks really interesting.
"Quercus is Caucho Technology's fast, open-source, 100% Java implementation of the PHP language." I'm not sure what it is good for, but it runs DokuWiki :-D
TaskFreak! is a simple but efficient web based task manager written in PHP.
This class can be used to parse bounced message reports.
class which allows to create and merge unified diff patches into any file.
Read, write, and modify Palm OS PDB files with PHP.
An Atom Publishing Protocol implementation for WordPress.
Digest and Basic authentication PHP implementation by Thomas Pike
One way to provide visually impaired users with the ability to use OCR-defeating passcodes is to stitch WAV files together.
This is a graphing class for PHP 5 that supports auto scaling, XML and CSV import, multiple datasets user defined size and color, and many options for end and point styles.
Test regular expressions against php's preg functions.
