PostNuke is an advanced web log/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.

Advanced Poll is a polling system with powerful administration tool. It features: multiple polls, templates, unlimited options, multi-language support, IP-Logging, IP-Locking, cookie support, comment feature, vote expire feature, random poll support and more. Supports textfile and mySQL database.

AutoIndex is a PHP script that makes a table that lists the files in a directory, and lets users access the files and subdirectories. It includes searching, icons for each file type, an admin panel, uploads, access logging, file descriptions, and more.

B2evoltion- Online Blogging Made Easy B2evolution is probably the most comprehensive blog engine you can find! Create a diary, post news about your products, or just let the world know how you feel about things.

Coppermine is a multi-purpose fully-featured and integrated web picture gallery script written in PHP using GD or ImageMagick lib with a MySQL backend.

A multi-user, multi-operator, multi-department live help support chat system that allows the operators of the websites to monitor their visitors as they are browsing the site and proactively open a chat session with the visitor. Is in PHP and uses either Mysql or Text based database . Other features include AUTO INVITE!, referrer tracking, page tracking, chat notification, user is typing message, multiple chat sessions, sound alert, leave a message if offline, push urls, quick responses, Customizable graphics, and multiple operators. runs on your server and is open source GPL.

Simple FAQ system.

Nexellent SiteBuilder is an Open Source CMS system.

OpenBiblio is an easy to use, open source, automated library system written in PHP containing OPAC, circulation, cataloging, and staff administration functionality. The purpose of this project is to provide a cost effective library automation solution for private collections, clubs, churches, schools, or public libraries.

Owl is a multi user document repository (knowledgebase) system written in PHP4 for publishing files/documents onto the web for a corporation, small business, group of people, or just for yourself.

phpAdsNew is an open-source ad server, with an integrated banner management interface and tracking system for gathering statistics. With phpAdsNew you can easily rotate paid banners and your own in-house advertisements. You can even integrate banners from third party advertising companies.

PhpDig is a web spider and search engine written in PHP, using a MySQL database and flat file support. PhpDig builds a glossary with words found in indexed pages. On a search query, it displays a result page containing the search keys, ranked by occurrence.

MyPhpMoney is a tool written in PHP to manage bank accounts thru a web interface. It uses mysql to store data and relies on PHPLIB (template, session and database abstraction). MyPhpMoney is organized around 6 principal modules.

phpmyfamily is a dynamic genealogy website builder which allows geographically dispersed family members to maintain a central database of research which is readily accessible and editable. By having a central repository, family members can contribute as and when information becomes available without requiring them to send it to a central 'custodian', or disseminate via email, and allows anecdotal information and possible leads to be shared.

PHP Surveyor is a set of PHP scripts that interact with MySQL to develop surveys, publish surveys and collect responses to surveys. Once a survey has been created it can be published as an online survey (displayed as single questions, group by group or all in one page) or you can use a data entry system for administration of paper-based versions of the survey. PHP Surveyor can produced 'branching' surveys (set conditions on whether individual questions will display), can vary the look and feel of your survey through a templating system, and can provide basic statistical analysis of your survey results.

A WikiWikiWeb is a web site where anyone can edit the pages through an HTML form. Linking is done automatically on the server side; all pages are stored in a database. The addictive quality of a Wiki is that making pages is as simple as making a link to them. If they don't yet exist, the page link will be followed by a hyper linked question mark; follow that link and you can define the new page.

Blogging platform built with PHP, designed with maximum customizability, speed and ease of use in mind. pLog was built with speed in mind, as it is meant to support many simultaneous users browsing dynamic pages. It has been optimized for performance several times during its development cycles and it is one of the fastest out there.

TUTOS (The Ultimate Team Organization Software) is a tool to manage the organizational needs of small groups, teams, departments. To do this it provides some web-based tools.

TYPO3 is a free Open Source content management system for enterprise purposes on the web and in intranets. It offers full flexibility and extendibility while featuring an accomplished set of ready-made interfaces, functions and modules.

UebiMiau is a simple, yet efficient cross-platform POP3/IMAP mail reader written in PHP. Its has many features, such as: Folders, View and Send Attachments, Preferences, Search, Quota Limit, etc. UebiMiau does not require database or extra PHP modules (--with-imap).

WebCalendar is a PHP-based calendar application that can be configured as a single-user calendar, a multi-user calendar for groups of users, or as an event calendar viewable by visitors. MySQL database is required.

The Web Shop Manager allows you to manage a fully functional online store from a centralized web-based administration system.

WordPress is a state-of-the-art semantic personal publishing platform with a focus on aesthetics, web standards, and usability. What a mouthful. WordPress is both free and priceless at the same time. More simply, WordPress is what you use when you want to work with your blogging software, not fight it.

XRMS is open-source Customer Relationship Management ("CRM") software. XRMS helps you manage your customer and contact records, track sales opportunities using forecasts and pipelines, ensure timely resolution of customer service and support incidents, and monitor the effectiveness of your marketing campaigns. XRMS is a fully-integrated suite web-based Customer Relationship Management (CRM), Sales Force Automation (SFA), and business intelligence (BI) tools, allowing companies to integrate and manage their sales, service, and marketing data into a single information store.