concrete5

http://www.concrete5.org/

concrete5 is an Open Source Content Management System (CMS) Empower your editors to create and share more content.

Elite CMS

http://elitecms.net/

Elite CMS is a web content management written in PHP language and require one MySQL database.

Icy Phoenix

http://www.icyphoenix.com/

NPDS

http://www.npds.org/index.php?op=edito-newindex

Phenotype CMS

https://sourceforge.net/projects/phenotype/

Phenotype CMS is a PHP/MySQL/Smarty based Open Source Content Management Framework dedicated to serve two basic principles: Easy Editing & Simple Efficiency

Quick.Cms

https://opensolution.org/cms-system-quick-cms.html

Free content management system (CMS). See how fast you can create your own website using this software!

Flyspray

http://www.flyspray.org/

Flyspray is a lightweight, web-based bug tracking system written in PHP for assisting with software development and project managements.

refbase

http://www.refbase.net/index.php/Web_Reference_Database

Alfresco

https://www.alfresco.com/

Alfresco is an open source, an open-standards content repository built by the most experienced content management team that includes the co-founder of Documentum.

dotProject

https://dotproject.net/

dotProject is a volunteer supported Project Management application. There is no "company" behind this project, it is managed, maintained, developed and supported by a volunteer group and by the users themselves.

FunkGallery

http://www.funkgallery.com/

FunkGallery, the FREE full function, highly customizable, open-source photo gallery software system. It uses the powerful PHP language and MySQL database.