Social Source Commons

Very extensible CMS platform based on PHP and used by many NGOs - "Community Plumbing"

This service no longer exists - please delete.

CivicSpace is a free open-source CMS platform for grassroots organizing and civic activity.

Open source web based photo album organizer

Open Source Content Managment System

Light and practical CMS

SMF is a free, professional grade forum tool using PHP and MYSQL. Integrates well with Joomla using a bridge add-on.

Tiki Wiki CMS Groupware is a full-featured, web-based, multilingual (35+ languages), tightly integrated, all-in-one Wiki+CMS+Groupware, Free Source Software (GNU/LGPL), using PHP, MySQL, Zend Framework, jQuery and Smarty. It is actively developed by a very large international community. Tiki can be used to create all kinds of Web applications, sites, portals, knowledge base, intranets, and extranets.

Tiki offers a very large number of features "out-of-the-box", arguably more than any other Open Source Web Application. Highly configurable and modular, all features are optional and administered via a web-based interface.

Major features include a robust wiki engine, news articles, discussion forums, newsletters, blogs, file and image galleries, bug and issue trackers (form generator), a links directory, polls/surveys and quizzes, FAQs, banner management system, calendar, maps, mobile version, RSS feeds, category system, tags, an advanced themeing engine (Smarty), spreadsheet, live support, shoutbox, inter-user messaging, menu generator, advanced permission system for users and groups, internal search engine, external authentication support, and much, much more.

WebCalendar is a PHP application used to maintain a calendar for a single user or an intranet group of users. It can also be configured as an event calendar.

Through the GoodStorm MarketSpace, sellers can set up online stores and earn 70% of the profit from items sold.

web-based interface for managing MySQL

PHP Language

SimplePie is a class, written in PHP, for reading RSS and Atom syndication feeds.

A free and open source PHP based blogging script.

TiddlyWiki with a PHP and MySQL backend

eTicket is a PHP-based electronic (open source) support ticket system based on osTicket, that can receive tickets via email (pop3/pipe) or a web form. It also offers a ticket manager with many features.

eGroupWare is a free enterprise ready groupware software for your network. It enables you to manage contacts, appointments, todos and many more for your whole business.

eGroupWare is a groupware server. It comes with a native web-interface which allowes to access your data from any platform all over the planet. Moreover you also have the choice to access the eGroupWare server with your favorite groupware client (Kontact, Evolution, Outlook) and also with your mobile or PDA via SyncML.

eGroupWare is international. At the time, it supports more than 25 languages including rtl support.

eGroupWare is platform independent. The server runs on Linux, Mac, Windows and many more other operating systems. On the client side, all you need is a internetbrowser such as Firefox, Konqueror, Internet Explorer and many more.

WikkaWiki is a flexible, standards-compliant and lightweight wiki engine written in PHP, which uses MySQL to store pages. Designed for speed, extensibility, and security.

XOOPS is an extensible, OO (Object Oriented), dynamic web content management system written in PHP. XOOPS can be used for developing small to large dynamic community websites.

ImpressCMS is a community developed Content Management System for building and maintaining dynamic web sites.

ImpressCMS is designed for a wide range of users, from business to community users, from large enterprises to people who want a simple, easy to use blogging tool.

GForge helps you manage the entire development life cycle

An open source content management system written in PHP with MySQL database concentrating on user-friendliness.

Open source auction script

Software suite for nonprofits providing web CMS, CRM, and payment gateway. Based on CiviCRM and Drupal, with multiple payment gateway options.

Drupal module which enables users to create named relationships between each other. Serves as basic building block for social networking features, or any site where users are aware of one another, and communicate.

Drupal model providing flexible, customizable flagging system. Supports any number of flags for nodes, comments, or users for purposes which include bookmarks, marking important, friends, or flag as offensive.

Drupal module that enables different users to see different themes.

This is one approach to theming for mobile websites.

Drupal module for detecting browser capabilities.

Interesting for various use cases including mobile.

Open Source social bookmarking tool (like del.icio.us)

Learn code for free online or teach code by creating a course.

usionPBX is an open source FreeSWITCH GUI. FusionPBX can be used as a high available single or domain based multi-tenant PBX, carrier grade switch, call center server, fax server, voip server, voicemail server, conference server, voice application server, appliance framework and more. FreeSWITCH is a highly scalable, multi-threaded, multi-platform communication platform.

Lightweight Open Source webmail written in PHP and JavaScript