PHPX  

PHPX is a web portal system, blog, Content Management System (CMS), forums, and more. PHPX is designed to allow everyone to be able to have feature rich, interactive websites even if you do not know a bit of programming. Some key features include fully integrated forums, downloads, image gallery with slideshow and auto-thumb nailing, support ticket system, GUI interface for web page content management, news with topics and instances and a whole lot more. PHPX allows you to fully customize the look of your site. No more being constrained within restrictive layouts, you say how you want your site to look and PHPX does the rest. Easy to install, even easier to manage, PHPX is the next generation of portal/CMS programs.

Hosting Requirements: Unix/Linux
Database: MySQL
Price: Free

   e107  

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 (allowing you to grab and display other site's headlines) and more. e107 is completely themeable and the only limitation is your imagination. Eight themes are included with the install. PHP 4.1+ and mySQL are required, the system self installs after asking you a few simple questions and testing your server for compatibility.

Hosting Requirements: Unix, Windows; PHP 4.1+
Database: MySQL
Price: Free

   The Harpia Project  

Harpia is a topic-centric content management system. Topic-centric design lets the user follow a logical thought through topics to find all associated items to that topic. Each item (i.e. news, links, faq, etc.) are associated to one or more topic and the all the items are displayed or each topic.

Hosting Requirements: Linux, Windows + IIS
Database: MySQL
Price: Free (GPL)

   Ovidentia  

Ovidentia is a portal Generator for companies, organizations or communities allowing an administrable management for publications of informations, forums of discussions, shareable diaries, FAQs, Workflow, file sharing and mail interface....With a WYSIWYG HTML editor to publish articles, news, posts or write emails. Ovidentia is 100% PHP and require Unix, Linux, or Windows NT/2000/XP and a Web server Apache or IIS with PHP and MySQL.

Hosting Requirements: Unix/Linux, Windows
Database: MySQL
Price: Free

   SaveWebPortal  

SaveWeb Portal is an OpenSource portal developed in PHP. It contains a lot of new original functionalities and some downloaded and customized OpenSource scripts. Membership, Community, NewsLetter, Forum, Chat, Polls, Contents Publishing, Search, GuestBook, E-Cards, Admin Site, Logs, Multi Language Support, Etc..

Price: Free

   Myphpnuke  

myPHPNuke is an automated news system especially designed for use in Intranets and/or the Internet. Using a MySQL database core, MPN gives complete flexibility in both administrative and user options. By using a database, dynamic pages are constructed on the fly for a rich and interactive experience.

Hosting Requirements: Apache 1.3.xx; PHP 4.x.x
Database: MySQL 3.23.xx
Price: Free

   Yerba SAC  

Yerba is a portal system made with PHP and SQL (mysql, postgres) Has forums, temporary blocks, a shopping cart, surveys, news, user accounts, modules, several languages, mailing lists, statistics, links, themes, headlines, banners, postcards and more

Hosting Requirements: PHP
Database: MySQL, PostgreSQL
Price: Free

   Drupal  

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.

Hosting Requirements: Unix/Linux, Windows, Mac
Database: MySQL, PostgreSQL
Price: Free

   PostNuke  

PostNuke is a weblog/Content Management System (CMS). It is far more secure and stable than competing products, and able to work in high-volume environments with ease. Some of the highlights of PostNuke are: Customisation of all aspects of the website's appearance through themes, including CSS support; The ability to specify items as being suitable for either a single or all languages. The best guarantee of displaying your webpages on all browsers due to HTML 4.01 transitional compliance; A standard API and extensive documentation to allow for easy creation of extended functionality through modules and blocks.

Hosting Requirements: Unix/Linux, Windows, Mac OS X
Database: MySQL
Price: Free

   phpWebThings  

phpWebThings is a set of PHP modules for creating a cool Web site with user login, news, forum, user messages, downloads, FAQs, and more. It allows the Webmaster to create his own site with freedom, using only the features he wants, and allowing new features to be added easily.

Database: MySQL, PostgreSQL
Price: Free