Dependency Manager for PHP

ownCloud provides universal access to your files via the web, your computer or your mobile devices — wherever you are.

MyBB is the free and open source forum software powering thousands of engaging, powerful, and unique communities across the internet.

Guzzle is a PHP HTTP client and framework for building RESTful web service clients

Community-based GPL-licensed network monitoring system

CakePHP is a rapid development framework for PHP which uses commonly known design patterns like Active Record, Association Data Mapping, Front Controller and MVC.

Simple Machines Forum — SMF in short — is a free, professional grade software package that allows you to set up your own online community within minutes.

Kanban project management software

A free, self-hostable RSS aggregator…

An easy-to-read, quick reference for PHP best practices, accepted coding standards, and links to authoritative tutorials around the Web.

The goal of the Sonata Project is to provide an e-commerce framework solution based on the Symfony2 framework.

An open source eCommerce plugin for WordPress created by WooThemes.

Codeception is a full-stack testing framework which incorporates acceptance, functional, and unit testing. It uses a simple PHP DSL to describe test scenarios and includes over 20 modules

Silverstripe is an OpenSource CMS built for developers

Ninja Forms is a form creation framework for WordPress.

concrete5 is a PHP based CMS featuring in-context editing, page versions and advanced permissions.

The Joomla! Content Management System

A pure PHP library for reading and writing presentations documents

Better parser for Markdown.

MODX is a powerful and flexible content management system that molds itself to your design. MODX is creative freedom.