Free software programmed in PHP

BlueSpice is free wiki software based on the MediaWiki engine and licensed with the GNU General Public License. It is especially developed for businesses as an enterprise wiki distribution for MediaWiki and used in over 150 countries.

ILIAS ( [German for "Integrated Learning, Information and Work Cooperation System"]) is an open-source web-based learning management system (LMS). It supports learning content management (including SCORM 2004 compliance) and tools for collaboration, communication, evaluation and assessment. The software is published under the GNU General Public License and can be run on any server that supports PHP and MySQL.

thumb|Unified Modeling Language|UML [[component diagram for Xdebug and PHP, integrated via the browser and an IDE]] Xdebug is a PHP extension which provides debugging and profiling capabilities. It uses the DBGp debugging protocol.

free software content management system written in PHP

Adminer (formerly known as phpMinAdmin) is a tool for managing content in databases. It natively supports MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle, Elasticsearch and MongoDB. Adminer is distributed under Apache license (or GPL v2) in a form of a single PHP file (around 470 KiB in size). Its author Jakub Vrána started to develop this tool in July 2007 as a light-weight alternative to phpMyAdmin. Adminer got some attention in 2008 when it made it to the CCA finals at SourceForge. Also, first webhosting providers started to include Adminer as MySQL managing tool into their portfolio of

BuddyPress is an open-source social networking software package owned by Automattic since 2008. It is a plugin that can be installed on WordPress to transform it into a social network platform. BuddyPress is designed to allow schools, companies, sports teams, or any other niche community to start their own social network or communication tool.

b2evolution is a content and community management system written in PHP and backed by a MySQL database. It is distributed as free software under the GNU General Public License.

ISPConfig is an open source hosting control panel for Linux, licensed under BSD license and developed by the company ISPConfig UG. The ISPConfig project was started in autumn 2005 by Till Brehm from the German company projektfarm GmbH.

webtrees is a free open source web-based genealogy application intended for collaborative use.

ProcessWire is a free and open source content management system (CMS), content management framework (CMF) and web application framework (WAF) written in the PHP programming language. It is distributed under the Mozilla Public License 2.0. ProcessWire is built around an API with usage and naming conventions similar to the JavaScript framework jQuery. The stated goal behind the API is to provide the level of accessibility and control to pages in a website that jQuery provides to the DOM. Content is managed either via the API or the web-based admin control panel. ProcessWire is largely used for d

FuelPHP is an open-source web application framework written in PHP which implements the HMVC pattern.

PhpGedView is a free PHP-based web application for working with genealogy data on the Internet. The project was founded and is headed by John Finlay. It is licensed under the GPL-2.0-or-later license.

PhpWiki is a web-based wiki software application. It began as a clone of WikiWikiWeb and was the first wiki written in PHP. PhpWiki has been used to edit and format paper books for publication.

Phorum is an open-source message board system written in PHP.

Internet forum software

ImpressPages is an open-source PHP framework with built-in content editor. Features include MVC engine, inline editing and drag&drop interface. It is distributed under the GNU GPL v.3.0 and MIT licences.

project aimed at preserving browser games and Flash animations

Geeklog is open-source software that works as a Weblog, CMS or Web Portal." It is written in PHP and during its history has supported MySQL/MariaDB, PostgreSQL, or Microsoft SQL Server as a database backend.

TCPDF is a free and open source software PHP class for generating PDF documents. TCPDF is the only PHP-based library that includes complete support for UTF-8 Unicode and right-to-left languages, including the bidirectional algorithm.

Menéame is a Spanish social news website based on community participation, made for users to discover and share content on the Internet, by submitting links, which are voted and commented upon. Its model is based on Digg and it combines social bookmarking, blogging and Web syndication with a publication system without editors. In July 2019, the Alexa Internet ranking presented the site in position 6249 of the world list, and 129 of the Spanish list.

phpList is open-source software for managing mailing lists. It is designed for the dissemination of information, such as newsletters, news, advertising to list of subscribers. It is written in PHP and uses a MySQL database to store the information. phpList is free and open-source software subject to the terms of the GNU Affero General Public License (AGPL).

Kloxo (formerly known as Lxadmin) was a free and open-source web hosting control panel for the Red Hat and CentOS Linux distributions. As of October 2017, the project has been unmaintained with a number of unresolved issues, and the project's website is offline.

Dotclear is an open-source blog publishing application distributed under the GNU GPLv2. Developed originally by Olivier Meunier from 2002, Dotclear has now attracted a solid team of developers. It is relatively popular in French speaking countries, where it is used by several major blogging platforms (Gandi Blogs, Marine nationale, etc.).

search engine optimization plugin for WordPress

Drush (DRUpal SHell) is a computer software shell-based application used to control, manipulate, and administer Drupal websites.

dotProject is a web-based, multi-user, multi-language project management application. It is free and open source software, and is maintained by an open community of volunteer programmers.

open-source project enabling management and web publication of photographs and other media

Web framework for PHP

2nd generation of the Vector skin for MediaWiki wikis

ELearning software

open source software used for creating Open Access repositories that are compliant with the Open Archives Initiative Protocol for Metadata Harvesting

open-source blog management software