The main use that I have found is in setting a module as your start page and being able to pass it variables (example: PostWrap). Under PostNuke Administration, Settings, you can set your Start Page (The module, index.php is pointing to), but the modules
Developer: spidean.mckenzies.net Platform: PostNuke Date upd:2002-12-16 Hits1041 [Visit]

The class iterates through a given set of bookmarks and calls user defined functions for different events. With this bookmarks can easily be ported, saved or displayed on web pages. Works with PHP4 and PHP5.
Developer: Lennart Groetzbach Platform: Date upd:2004-11-30 Hits1401 [Download] [Visit]

Fanlisting script that supports unlimited members, unlimited extra options, total member counts, sort by member id or country and the choice to add more than one admin to control panel. Ability to run multiple fanlistings from one control panel.
Developer: frosti.org Platform: Date upd:2004-01-16 Hits1221 [Visit]

MacTheme is a new premium theme for phpBB 2.0.x. If you want your phpBB forums to look
Developer: zarron.com Platform: Date upd:2004-07-16 Hits2398 [Download] [Visit]

html_special_chars_encode is a code snippet to encode STDIN to be included in html where result is written to STDOUT. It replaces all occurances of characters known to break HTML.
Developer: jeremybrand.com Platform: Linux, Unix, FreeBSD, Windows (PHP CGI env) Date upd:2001-05-22 Hits1531 [Download] [Visit]