ProcessWire is an open source content management system (CMS) and web application framework aimed at the needs of designers, developers and their clients. ProcessWire gives you more control over your fields, templates and markup than other platforms, and provides a powerful template system that works the way you do. ProcessWire's API makes working with your content easy and enjoyable.

ProcessWire - PHP 5 based Content Management Framework

Subrion CMS is a stand-alone PHP content management system that is very easy to use. It comes with a ton of great features including full source editing, per-page permissions, user activity monitoring, Powerful Dashboard, Menu editor, SEO Friendly, Easy Integration with Adsense, Google Analytics, Paypal and much more.

Subrion -  Content Management System in PHP

Novius OS is an Open Source PHP Content Management System designed as an applications platform, hence the ‘OS’ suffix. You tailor Novius OS to your content through the creation of custom applications. Your well-structured content is to ready to be published to any channel—present and future.
 
Its key feature include, A multitasking interface to improve productivity : Novius OS interface is straightforward and smart and is available both on tablet and desktop. Users can easily go from one tab to the other without losing their content and save the work space to save time. A single tool to manage several sites in many languages : Novius OS is natively multisites and multilanguage, it is therefore easy to share content and media according to the context and language. 
 
Native or tailored applications to perfectly suit the company's activity : in addition to native applications made for digital communication, tailored applications can be created either by users or by an expert in order to better suit the business' needs. A powerful and user-friendly media centre : media are organised as a standard file explorer. Intuitive and fast, the media centre keeps the images' HD versions and offers SEO options.
 
An ideal environment for developers : Novius OS gives developers all they need to create applications with no effort: applications creation assistant, standardised UI, internal and external connectors or theming.

Novius OS is an Open Source PHP Content Management System designed as an applications platform, hence the ‘OS’ suffix. You tailor Novius OS to your content through the creation of custom applications. Your well-structured content is to ready to be published to any channel—present and future.

Novius OS - Create Once Publish Everywhere with Novius OS, a Cross-Channel Open Source CMS.

PHP-Nuke is a Web Portal System or content management system. The goal of PHP-Nuke is to have an automated web site to distribute news and articles with users system. Each user can submit comments to discuss the articles. Its main features include: 
 <UL>
 <LI>Web based admin</LI> 
 <LI>Surveys</LI> 
 <LI>Top page, access stats page with counter</LI> 
 <LI>User customizable box</LI> 
 <LI>Themes manager for registered users</LI> 
 <LI>Friendly administration GUI with graphic topic manager</LI> 
 <LI>Option to edit or delete stories</LI> 
 <LI>Option to delete comments, moderation system</LI> 
 <LI>Referers page to know who link us</LI> 
 <LI>Customizable HTML blocks</LI> 
 <LI>User and authors edit</LI> 
 <LI>An integrated Banners Ads system</LI> 
 <LI>Search engine support</LI> 
 <LI>Backend/Headlines generation (RSS/RDF format)</LI> 
 <LI>Support for 33 languages</LI>
 <LI>Comments option in Polls</LI>
 <LI>Ephemerids manager</LI> 
 <LI>File Manager</LI> 
 <LI>Download manager</LI> 
 <LI>FQA manager</LI> 
 <LI>Reviews system</LI> 
 <LI>Newsletter</LI> 
 <LI>Categorized articles</LI> 
 <LI>Integrated phpBB Forums</LI>
 </UL>

PHP-Nuke is a Web Portal System or content management system. The goal of PHP-Nuke is to have an automated web site to distribute news and articles with users system. Each user can submit comments to discuss the articles.

PHPNuke

Strelin is a fork of the great Joomla! 1.5 content management system. Joomla! 1.5 is so widely used content management system. As Joomla! is moving towards 1.6 with big core changes, Strelin has been started for those who want new features but don't want to get into possible extra migration work. Its feature include:
 <UL>
	<LI>Flexible Content Categorization</LI>
	<LI>Powerful skin management</LI>
	<LI>Flexible Access Control and Extended ACL</LI>
	<LI>Multiple authentication protocols supported including LDAP, OpenID, and Gmail</LI>
	<LI>Make money with advertising banners</LI>
	<LI>Web Link Management</LI>
	<LI>Multi-level menu management </LI>
	<LI>Simple and powerful WYSIWYG editor to write your articles.</LI>
	<LI>Spam protection</LI>
	<LI>Multi-language support</LI>
	<LI>Page caching</LI>
	<LI>GZIP page compression</LI>
	<LI>All Joomla1.5 extensions compatible with Strelin CMS</LI>
 </UL>

Strelin is a fork of the great Joomla! 1.5 content management system. Joomla! 1.5 is so widely used content management system. As Joomla! is moving towards 1.6 with big core changes, Strelin has been started for those who want new features but don't want to get into possible extra migration work.

Strelin CMS - A Joomla fork

concrete5 is a open source CMS implemented in PHP. It provides support to do In-context editing. File manager manages the images and documents which could be used throughout the site. Every page in a concrete5 site is part of one unified hierarchy called site tree. It provides support for User management, full text search, Page versions and lot more. Sourceforge location: <A HREF="http://sourceforge.net/projects/concretecms/" target="_blank">http://sourceforge.net/projects/concretecms/</A>

concrete5 is a open source CMS implemented in PHP. It provides support to do In-context editing. File manager manages the images and documents which could be used throughout the site. Every page in a concrete5 site is part of one unified hierarchy called site tree. It provides support for User management, full text search, Page versions and lot more.

concrete5 - CMS built for Geeks

jCore is a Multi Site web Content Management System build especially for webmasters (using the well known LAMP environment) who have to maintain multiple websites for their clients and they would like to keep the source codes up to date and easily fix bugs for all clients at once. Its feature include Dynamic Web 2.0 Layout, Forms, Multiple Menus, Members Management, RSS Feeds, jQuery support and lot more.

jcore - Webmaster Multisite CMS

Croogo is a content management system, built on top of CakePHP framework. It provides support to Create pages, Taxonomy, WYSIWYG Editor, Threaded comments, Email notification, Spam protection, Search engine friendly URLs, File Manager, Users and Group administration, File Manager, Custom fields and lot more.

Croogo - Content Management System built on CakePHP framework

Dokeos 2.0 brings the web 2.0 experience to your elearning and collaboration platform with a true social platform and a lot of drag and drop interactions. We experienced that teachers, trainers, students and trainees tend to use only a few features in classical learning management systems. 

Dokeos - Online E-Learning Made Easy

ImpressCMS is a community developed Content Management System, developed in PHP and MySQL. With this tool, maintaining the content of a website becomes as easy as writing a document!
 
It is Database-driven, Fully modularized, User Management, Multi-byte Language Support, Theme-based skinnable interface and lot more.

ImpressCMS is a community developed Content Management System, developed in PHP and MySQL. With this tool, maintaining the content of a website becomes as easy as writing a document!

ImpressCMS - Content Management System

Geeklog manages dynamic web content. "Out of the box", it is a blog engine, or a CMS with support for comments, trackbacks, multiple syndication formats, spam protection, and all the other vital features of such a system. Geeklog was originally developed for the Security Geeks web site. 

Geeklog - The Secure CMS

The goal of Glav.in is to provide the most simplistic CMS experience possible. It is not intended for large, multifaceted websites - it just ain't got the juice. Glav.in is for simple, informational websites. Maybe a site for a local barber shop? Perhaps even a site for your cat? It does not requires database, all your data will be stored as JSON files.

Glav.in - A Simple CMS

October is a Content Management System (CMS) and web platform whose sole purpose is to make your development workflow simple again. October's mission is to show the world that web development is not rocket science. Pages, layouts and partials are just files, one file per template. This makes the website themes completely manageable with Content Version Systems like Git or SVN.

October - Content Management System (CMS) and Web Platform

Fraym the new open source content management system built using PHP and MySQL. Its features include Multilanugage & Multi-site Support, Cachine, SEO, Themes, Live Editing and lot more.

Fraym - The new content management system

Cosmo is a single page app CMS built on AngularJS and PHP. It provides support for SEO friendly URL,  Custom WYSIWYG, Always mobile ready and lot more. With AngularJS being at the core of cosmo, every installation becomes a single page app. This allows for faster page loads, keeps the number of header requests down and the total website size smaller.

Cosmo - Single Page CMS built on PHP and Angular 

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