PHP-Nuke is a Web Portal System or content management system for online communities. Its goal is to have an automated web site to distribute news and articles with user system. Each user can submit comments to discuss the articles. Features: web admin, polls/surveys with comment, statistics, user customizable box, themes manager, friendly admin GUI, moderation system, sections manager, banner system, backend/headlines generation, Yahoo like search engine, Ephemerids manager, file manager, download manager, faq manager, advanced blocks system, reviews system, newsletter, content management, encyclopedia generator, md5 password encryption, phpBB Forums integration, support for 33 languages, 100% modular and more. Written 100% in PHP and requires Apache, PHP and a SQL Database Server. Supports MySQL, MySQL4, DB2, Access, msSQL, ODBC, PostgreSQL, Oracle and SQLite.

DCP-Portal is a content management system with advanced features like web based update, link, file, member management, poll, calendar, content informer, content sending by members etc. Features: Admin panel to manage the entire site; HTML editor to add news and content; Members can submit news and contents, and write reviews; Members can receive the added content in e-mail; Mailing list; Search engine; Content categories; FAQ; Easy setup; Multi-language support; Forum; Message system; member agenda; Ad management. Site design can be changed with just one template file, publish in homepage option, .txt file import for contents, featured module, works with register_globals=off..

Mambo is a feature-rich dynamic portal engine/content management tool capable of building sites from several pages to several thousand. Mambo uses PHP/MySQL and features a very comprehensive admin manager. Mambo uses a modular framework for component/class extensibility. With Mambo there is no need for HTML, XML, DHTML skills. Just enter your content, add a picture and then through the easy to use administrator web-interface click Publish.

Geeklog is a Web Portal System for any webmaster. Set it up as a storytelling software, News system, online community or whatever you want your site to be. Each user can submit comments to discuss the articles, similar to Slashdot, only faster and more secure. Features: web based admin, surveys, top page and access stats, user customizable box, friendly admin GUI, option to edit or delete stories, moderation system, customizable HTML blocks, user password encryption and retrieval, search engine, backend/headlines generation, and more. Written 100% in PHP, requires Apache, PHP and MySQL. The over-riding development philosophy for the software is performance, privacy and security.

PostNuke is an advanced weblog/Content Management System (CMS). It offers full CSS support, HTML 4.01 transitional compliant, advanced blocks system, ability to run multiple sites from one code base and is fully multi-lingual enabled. .726 update: XML/RPC support, visual text editor, new banner system & sideblock banners, Apache 2.0, hacker protection, backporting of 0.8 fixes, security patches. Read more at: http://news.postnuke.com/modules.php?op=modload&name=News&file=article&sid=2453&mode=thread&order=0&thold=0

e107 is a website system written in php and mySQL. It installs a completely dynamic website on your server allowing you to post/edit news directly from a secure administration backend. Plugins included with the install are chatbox, poll system, headline retrieval and more. e107 is completely themeable and the only limitation is your imagination. 12 themes are included with more to download at the website. PHP 4.1+ is required, the system self installs after asking you a few simple questions and testing your server for compatibility. Code is XHTML Strict compliant, realtime support available in #e107 on freenode.net.

SaveWeb Portal is an OpenSource portal developed in PHP. It includes a lot of new original functionalities along with some downloaded and customized OpenSource scripts. Features include: Multi Language support, Membership, Community, NewsLetter, Polls, Articles Writing with WYSIWYG editor, Contents Publishing, GuestBook, E-Cards, Admin Site, Chat, Forum, etc. Saveweb Portal uses Database (Access or MySQL) and flat files for data storing. English documents included. v3.4 update: Some Improvements,No-cache added in some pages, Delete confirms added,Some bugs fixed

Drupal is an open-source platform and content management system for building dynamic web sites offering a broad range of features and services including user administration, publishing workflow, discussion capabilities, news aggregation, metadata functionalities using controlled vocabularies and XML publishing for content sharing purposes. Equipped with a powerful blend of features and configurability, Drupal can support a diverse range of web projects ranging from personal weblogs to large community-driven sites. Due to its modular design Drupal is flexible and easy to adapt or extend. The Drupal platform, written in PHP and utilizing a database back end (e.g. MySQL or PostgreSQL database) provides APIs that facilitate the development of building blocks (modules) that seamlessly integrate with each other. The functionality of Drupal systems can be easily extended by adding and configuring new modules. The source code is available under the terms of the GNU General Public License (GPL).

php(Reactor) is a PHP/MySQL-driven system of integrated web applications to encourage user interaction and easy website maintenance. Some of its main functions include: bbs/forums - supports flat, threaded, or ranked modes, simple yet powerful admin, moderator support, mailing lists; e-cards - supports graphical (gif or jpeg) as well as iframe and javascript cards; events - a place to schedule chat events, with option to restrict access to who gets to post events, or leave it wide open; polls - users can upload their own polls as well; and admin - allows you to control all functionality of your site through a browser interface.

Land Down Under is a skinnable PHP/MySQL website engine, featuring everything you need to quick-start any kind of site, but more specifically community sites. Multi-categories, links, pages, smilies, BBcode, built-in news system, fast built-in forums, users profile, comments, ratings, event manager, polls, administration tools, statistics, localization support, groups of users. Fully skinnable, PHP code and HTML layout are 100% separated. Requires PHP4.3 and MySQL 3.23 or more, and a MySQL administration tool such as phpMyAdmin.