Content Management Systems

ImpressCMS is a PHP-based Content Management System. It is a fork of XOOPS and compatible with it, but reportedly has many improvements.

Reading from the Freshmeat Record:

ImpressCMS is a content management system that allows you to easily build and maintain a dynamic Web site. It is a fork of XOOPS and is fully compatible with XOOPS modules and themes, but has many improvements. These include native multilingual support, a completely redesigned admin interface, management of unlimited block positions on the user side, easy cloning of existing blocks with a single click, a redesigned installation wizard with inline help at every step, many security improvements including the introduction of the Trust Path concept, which allows the storing of sensitive data outside the Web root, an automatic version checker, and a customizable privacy policy feature.