From Wiki

This is the current list of software currently installed on this machine (relevant to this site) for sanity's sake.

[edit] Server

Apache 2.2.3

PHP 5.1.6

MySQL 5.0.27

[edit] Site

MediaWiki 1.11.0

Drupal 5.3

• MediaWiki extension v 5.x-1.x-dev (slightly modified)