Joomla: Joomla! is one of the most powerful Open Source Content Management Systems on the planet. It is used all over the world for everything from simple websites to complex corporate applications. Joomla! is easy to install, simple to manage, and reliable.
Mambo Open Source: A professional level yet easy to use Content Management System featuring inline WYSIWYG content editors, newsfeeds, syndicated news, banners, mailing users, links manager, statistics, content archiving, date based content, 20 languages, modules and components.
phpWCMS: phpWCMS is perfect for professional, public and private
users. It is very easy to learn and gives you the flexibility to separate layout and content. Lots of powerful but simple implemented features assists publishers and web developers too.
phpWebSite: Very powerful Content Management System with document
manager, announcements, menu manager, photo album, block maker, FAQ, web pages maker, polls, information categorizer, calendar, link manager, form generator.
TYPO3: TYPO3 is a free Open Source content management system for enterprise purposes on the web and in intranets. It offers full flexibility and extendability while featuring an accomplished set of ready-made interfaces, functions and modules.
Crafty Syntax Live Help: A Live Help chat system featuring monitor your visitors, proactively open a chat session, multiple chat sessions, referer tracking, page view tracking, multiple operators, canned responses/images/URLs, multiple departments each with different icons, leave a message.
Help Center Live: Very powerful all-in-one help center including Live Help,Support Tickets and FAQ. Features include unlimited operators/departments, monitor visitors, initiate chat, collect visitor's information, track visitor's footprint, autosave chat transcripts, canned messages, leave a message, auto-assign tickets to operators, unlimited FAQ topics.
osTicket: A Support Tickets system featuring email piping, pop3
login, unlimited email addresses, admin/staff/user panels, avoid autoresponder loops, limit maximun tickets user can have opened, accept attachments and limit size, pager alerts for admin.
PerlDesk: PerlDesk is a feature packed browser based help desk and email management application designed to streamline the operation of managing emails,support tickets and customer comminications, with built in tracking and response logging it is an ideal help desk solution for companies with one or more members of staff or for those who want to organise client communications URL: http://www.perldesk.com/
PHP Support Ticke: A simple, one-admin Support Tickets system featuring self-registering, emailing to admin, attachments
Support Logic Helpdesk: A Support Tickets system featuring multiple email addresses, admin/staff/user panels, canned responses, HTML tags support, email limit on a per user/day basis, attachments.
SMF : Elegant. Effective. Powerful. Free. SMF is all of the above. SMF is a next-generation community software package and is jam-packed with features, while at the same time having a minimal impact on resources.
OS Commerce: A power-user shopping cart with a big variety of modules
and support of almost every payment gateway. A big developers community is ready to offer custom solutions depending on your needs.
Zen Cart: Zen Cart truly is the art of e-commerce; a free, user-friendly, open source shopping cart system. The software is being developed by group of like-minded shop owners, programmers, designers, and consultants that think e-commerce could be and should be done differently.
AccountLab Plus: AccountLab can lookup over 180 TLD's, have unlimited hosting plans, offer monthly, quarterly, six monthly and yearly payment options, handle tax. AccountLab works with PayPal, WorldPay (FuturePay), NoChex, 2checkout and offline payments such as checks or bank transfer.
4Images Gallery: An Image Gallery system featuring unlimited categories /subcategories, web-based and FTP images upload, auto-thumbnails, comments, send a picture, rate a picture, random pictures, extensive administration panel.
Coppermine Photo Gallery: An Image Gallery system featuring categories and albums, thumbnails and intermediate size pics, search feature, new and random pictures, user management (private galleries, groups), user comments, e-cards feature, slideshow viewer.
Advanced Poll: A highly windows-inspired poll script.
phpESP: PhpESP is an effective, capable, web-based survey application that enables businesses to create complex and advanced surveys, view results in real time, and carry out advanced analysis.
PHPSurveyor: Develop, publish and collect responses to surveys. Display surveys as single questions, group by group or all in one page or use a dataentry system for administration of paper-based versions of the survey. PHP Surveyor can produce '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.
PHProjekt: Project Management featuring optional group system, privileges, calendar, contacts, time card, projects, chat, forum, request tracker, mail client, files, notes, bookmarks, to-do list, reminder, voting, language support
Soholaunch Pro Edition: From basic, informational websites to robust e-business applications, this script vastly simplifies the creation and management of cutting-edge internet solutions. It installs at the end-users web site and empowers novices and seasoned developers alike with a streamlined development and management process unmatched by any other software product.
Templates Express: Use Templates Express to install static templates to your website. You will need to use FTP and edit the html files, replacing the default text with your own text. Standard information like title, name, address and similar will be collected during installation and placed into the installed template in the appropriate locations.
TikiWiki: TikiWiki is designed to be an international, clean and extensible Content Management System and Groupware that can be used to create all sorts of web applications, sites, portals, intranets and extranets. TikiWiki also works great as a web-based collaboration tool. TikiWiki has a lot of native options and sections that you can enable/disable as you need them.
PhpWiki: PhpWiki 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.
Moodle: A course management system designed to help educators create quality online courses. Available in 34 languages and features a WYSIWYG HTML editor. The teacher has full control over all settings for a course. There is a flexible array of course activities (Forums, Journals, Quizzes, Resources, Choices, Surveys, Assignments, Chats, Workshops), user logging and tracking, mail integration and much more.
Noahs Classifieds: A classifieds system featuring categories and subcategories in unlimited depth, image upload for categories and classifieds, variable fields per categories, customizable email notifications, locking categories, classifieds approval, auto-thumbnail generation, classifieds management by user, send classified to a friend.
phpAdsNew: A highly professional complete ad server featuring different types of ads, display based on keywords, zones, hour of the day, day of the week, extensive statistics, client statistics.
PHPauction: The GPL version of PHPauction featuring email notification of bids, attachments, reserve price, minimum bids, standard and dutch auctions, bid history, send auction to a friend, highest bids, auctions ending soon.
phpFormGenerator: A form generator featuring up to 100 form fields, all kind of input fields incl. file upload, customizable fields attributes, send submitted data to an email address or store them in a database, admin panel.