Fantastico

Fantastico is a terrific web-based application that lets you install the most selected popular scripts -- no need to upload files, setting permissions, or creating databases. Fantastico does it all for you! You will have the latest stable version of fantastico. Here is a list of the programs with Fantastico:

Customer Relationship:

CS Live Help (visit site)

A 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. Other features include Mysql database, chat notification, user is typing message, multiple chat sessions, referrer tracking, page view tracking and multiple operators. 

PHP Support Tickets (visit site)

Manage customer queries with this one stop solution for online customer relations. Please read below for the features contained in this simple, powerful and secure application. Get it now while it is still FREE! PHP Support Tickets is written in PHP and utilizes a MySQL database both are required on your web server to operate this application. Please read the requirements below!

Support Services Manager (visit site)

a powerful Support Desk and Knowledge Base application. It includes many powerful features to allow you to easily add a full-featured Knowledge Base along with a robust support request or "trouble ticket" management system to your existing support services. Through SSM, you will be able to easily manage these effective systems and reduce the time and effort required in providing award-winning technical support. 

Other Scripts:

OS Commerce (visit site)

an online shop e-commerce solution under on going development by the open source community. Its feature packed out-of-the-box installation allows store owners to setup, run, and maintain their online stores with minimum effort and with absolutely no costs or license fees involved.

4images Gallery (visit site)

4images is a powerful web-based image gallery management system. Features include comment system, user registration and management, password protected administration area with browser-based upload, HTML templates for page layout and design, search engine and a lot more. 4images is free for private and non-commercial use.

PHPauction (visit site)

provides a complete suite of applications and services for building auction web sites. auction programs offer flexibility, power, and ease of use for small businesses and individuals. The Hosting service provides a full-featured, low-cost hosting solution for anyone who is in need of hosting. 

PHProjekt (visit site)

a modular application for the coordination of group activities to share information and document via intranet and internet. Components of PHProject: Group calendar, project management, time card system, file management, contact manager, mail client and 9 other modules ...

phpLinks (visit site)

PHPLinks is an open source project allowing one to run an extremely efficient Link Farm with full search capabilities. A "simulated" search engine in many ways.

Moodle (visit site) 

a course management system (CMS) - a software package designed to help educators create quality online courses. Such e-learning systems are sometimes also called Learning Management Systems (LMS) or Virtual Learning Environments (VLE). One of the main advantages of Moodle over other systems is a strong grounding in social constructionist pedagogy.

Noah’s Classifieds (visit site) 

Defining categories and subcategories in unlimited depth. Image upload for the categories and the advertisements. Definig variable fields for the advertisements per categories. Customizable email notifications.

PHPlist (visit site) 

a web application that implements a personalized mailing list manager or customer relationship management (CRM) system. PHPlist is designed to assist you to stay in touch with your audience, without flooding them with information they don't want. PHPlist is an essential tool for anyone who is serious about creating, capturing and maintaining an offline audience, and will help you increase traffic to your website.

WebCalendar (visit site) 

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. It can be a schedule management system for a single person; a group of people, allowing one or more assistants to manage the calendar of another user; An events schedule that anyone can view, allowing visitors to submit new events.

Portals/CMS:

PHP-Nuke (visit site)

a news automated system specially designed to be used in Intranets and Internet. The Administrator has total control of his web site, registered users, and he will have in the hand a powerful assembly of tools to maintain an active and 100% interactive web site using databases.

Post-Nuke (visit site) 

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. 

phpWebSite (visit site) 

phpWebSite provides a complete web site content management system. All client output is XHTML 1.0 and meets the W3C's Web Accessibility Initiative requirements.

xoops (visit site) 

a dynamic OO (Object Oriented) based open source portal script. XOOPS is the ideal tool for developing small to large dynamic community websites, intra company portals, corporate portals, weblogs and much more.

Blogs:

b2 (visit site)

A classy news/weblog tool

pMachine Free (visit site) 

Introducing ExpressionEngine, the next-generation publishing system from pMachine. Over a year in the making and designed from the ground up, ExpressionEngine is the most flexible, modular, and scalable web publishing system on the planet.

Discussion Boards:

phpBB2 (visit site)

phpBB is a high powered, fully scalable, and highly customizable open-source bulletin board package. phpBB has a user-friendly interface, simple and straightforward administration panel, and helpful FAQ. phpBB is the ideal free community solution for all web sites.

Invision Board (visit site)

Fast and efficient programming and database usage. Customize the look of every page using standard HTML in the skinning system. Powerful and easy to use administration area and tools to control your board and your members. No limits on storage of posts or topics. COPPA support to comply with new laws. Professional support services and enhancements.