The Free / Libre / Open Source Web App with the most built-in features
Cerberus Content Management System
WackoWiki is a light and easy to install multilingual Wiki-engine.
Lightweight flat-file blog engine and CMS
RhinOS, CMS, Content Management System, Josep Sanz Campderrós
PHP Document Management System (DMS)
a fast simple CMS system based on PHP & Sqlite
phpBB is the world's leading open source discussion forum software.
The file based CMS with full-featured editing
file explorer and picture gallery — web-based, easy-to-use and free
Open Source Enterprise Wiki and Web Application Platform
Gnew is a simple Content Management System (CMS)
Quickly & eaily host theft-resistant web-site content
A portable, HTML5 file-based CMS
Мощная система публикации новостей
Free PHP web analytics script
A simple CMS for digital music shop (or freely downloadable music)