phpBB is a popular Internet forum package written in the PHP scripting language. The name “phpBB” is an abbreviation of PHP Bulletin Board. Available under the GNU General Public License, phpBB is a free software.
phpBB was started by James Atkinson as a simple UBB-like forum for his own website on June 17, 2000. Nathan Codding and John Abela joined the development team after phpBB’s CVS repository was moved to SourceForge.net, and work on 1.0.0 began. A fully functional, pre-release version of phpBB was made available in July.

Simple Machines Forum (abbreviated as SMF) is a freeware Internet forum application. The software is written in PHP and uses a MySQL database backend, although multi-database support is being developed for version 2.0. SMF is developed by the Simple Machines development team.
SMF was created to replace the forum software YaBB SE, which at the time was gaining a bad reputation because of problems with its Perl-based ancestor software YaBB[citation needed]. At the time, YaBB was attributed to causing resource allocation problems on many systems. YaBB SE was written as a …

osCommerce (“open source Commerce”) is an e-commerce and online store-management software program. It can be used on any web server that has PHP and MySQL installed. It is available as free software under the GNU General Public License.
osCommerce was started in March 2000 in Germany by project founder and leader Harald Ponce de Leon as The Exchange Project. While osCommerce is still officially in its development stage, the current Milestone 2.2 release (Release Candidate 2a) is considered stable. As of August 2008 the osCommerce site says that there are …

WordPress is a blog publishing system written in PHP. All data is stored in a MySQL database. WordPress is the official successor of b2\cafelog, developed by Michel Valdrighi. The name WordPress was suggested by Christine Selleck, a friend of lead developer Matt Mullenweg.
The latest release of WordPress is version 2.6.2, released on 08 September 2008. It is distributed under the GNU General Public License version 2.

dotCMS is a free software / open source web content management system (wCMS) for building/managing websites, content and content driven web applications. dotCMS includes enterprise CMS features such as support for virtual hosting, WebDav (beta) ,structured content, clustering and can run on multiple databases PostgreSQL, MySQL, MSSQL and Oracle, and is available as software that can be installed on a web server or via a hosting provider (dotMarketing is now offering the onDemand virtual hosting service for clients, and has also registered an image available via the Amazon Elastic …

Plone is a free and open source content management system built on top of the Zope application server. It is suited for an internal website or may be used as a server on the Internet, playing such roles as a document publishing system and groupware collaboration tool.
Plone is released under the GNU General Public License (GPL) and is designed to be extensible. Major development is conducted periodically during special meetings called Plone Sprints. Additional functionality is added to Plone with Products, which may be distributed through the Plone website …

MiaCMS is a powerful, flexible, and easy to use open source content management system. It can be used to build websites of all shapes, sizes, and scenarios. MiaCMS features simple installation, graphical (WYSIWYG) HTML editors, RSS content syndication, a powerful 3rd party extension system, flexible theming capabilities, site search, RESTful content access, user management, multilingual capabilities, plus much more.
MiaCMS is released under the terms of the GNU General Public License (GPL) Version 2. It is written with the PHP & JavaScript programming languages and uses the MySQL database. The …

ImpressCMS is a free, open source , community-developed content management system for building and maintaining dynamic web sites, written in the PHP programming language and using a MySQL database.
The ImpressCMS Project was formed in late 2007 as a result of a division in the XOOPS community[1]. Many of the developers for ImpressCMS were veteran developers, designers and users with extensive experience with XOOPS and sought to establish a new community built CMS with a philosophy of openness, community contributions and continual improvements in code and features. The core platform …

CMS Made Simple is an open source (GPL) package, built using PHP that provides website developers with a simple, easy to use utility to allow building small-ish (dozens to hundreds of pages), semi-static websites. Typically our tool is used for corporate websites, or the website promoting a team or organization, etc. This is where we shine. There are other content management packages that specialize in building portals, or blogs, or article based content, etc. CMS Made Simple can do much of this, but it is not our area of …

SilverStripe is a free and open source programming framework and content management system (CMS) for creating and maintaining websites. The CMS provides an intuitive web-based administration panel, allowing any person to maintain their website without knowledge of markup or programming languages.
SilverStripe offers a flexible MVC development framework known as Sapphire. Much like Ruby on Rails, but for PHP, it ensures developers are capable of extending and enhancing the functionality of the CMS and the website. More importantly, SilverStripe provides developers with complete control of the generated markup; allowing for …