system, and more. PmWiki is a PHP-based wiki. Features include: GPL-licensed, easy installation/customization, designed for collaborative authoring and maintenance of web sites, and support for Internationalization . Does not require a database. NPJ [28] (aka NetProjectJournal) -- PHP/MySQL-based multi-wiki/multiblog/multiserver teamwork-oriented modular engine with a cross-server authorization. See bug/issue tracker module for