Best Open Source CMS Projects
Wolf CMS
Simple CMS with flexible per-page templates
Zikula
Web application toolkit and modular CMS
PluXml
Blog and CMS that stores content in XML
Typesetter
Lightweight flat-file CMS with true WYSIWYG
Serendipity
Extensible PHP weblog engine with a plugin ecosystem
Nibbleblog
Small, fast blog engine that needs no SQL database
FlatPress
Flat-file blog that stores posts as plain text
b2evolution
Multi-blog CMS with built-in user and workflow tools
NukeViet CMS
Vietnam's first open-source multi-purpose CMS
Open Monograph Press
Platform for managing scholarly book publishing
PHP-Fusion
Lightweight PHP CMS with a simple admin area
Cotonti
Web framework and CMS focused on speed and security
phpwcms
Fast PHP and MySQL CMS used on thousands of sites
Xoops
Extensible object-oriented portal and CMS
Pluck
Small, simple CMS for small websites
Open Preprint Systems
Platform for running preprint servers
CSZ CMS
Responsive CMS built on CodeIgniter and Bootstrap
Dotclear
User-friendly open-source publishing tool from France
WBCE CMS
Secure, SEO-friendly CMS with a friendly interface
GeniXCMS
Simple PHP CMS and framework for developers
PopojiCMS
Beginner-friendly PHP OOP content management system
Zenario
Modular CMS for simple and complex websites
Composr
Flexible CMS with social and interactive features
ClipperCMS
Flexible CMS for sites, blogs and applications