Tiki

Tiki is a full-featured, multilingual content management system and wiki platform. In addition to enabling websites and portals, Tiki contains a number of collaboration features allowing it to operate as a Geospatial Content Management System (GeoCMS) or Groupware web application.

Homepage: info.tiki.org

Tiki is the Free and Open Source Web Application with the most built-in features. So whatever feature you can imagine running in your browser window, chances are Tiki does it.

• Knowledge base: Wiki, FAQs, File gallery, Photo Album, Tags, Search, Kaltura video management integration, etc.
• Collaboration/Project Management: Wiki, Forums, Tasks, Permissions, Timeline, Proposals/Votes, Blog, Categories, Watch, etc.
• Publishing/web site: News articles, Blog, RSS, Newsletter, Maps, Themes, Banners, WYSIWYG, SEO, etc.
• Commerce: Shopping Cart, Payment, Membership, Credits, Accounting, etc.
• Social networking/Community: Friends, Maps, Inter-user messages, Surveys, Polls, Chat, Share link, Comments, Calendar, etc.
• CRM / Help Desk: User database, membership, Bug & issue trackers, polls, etc.
• Office suite: Wiki, Spreadsheet, Slideshow, Drawings, Database (trackers) and Reports, etc.
• Personal Information Management (PIM): Calendar, Webmail, Address book, Notepad, Time Sheet, etc.
• E-learning: Quizzes, Slideshow, BigBlueButton webinar integration, etc.
• Framework: App builder (forms & reports), Workflow, Profiles, Advanced wiki syntax, etc.

Marc Laporte, a long-time Tiki Administrator and Tiki Community Software Association board member is interviewed for the 146th FLOSS Weekly netcast, with Randal Schwartz and Simon Phipps, current President of the Open Source Initiative (OSI)

Tiki has all these features built-in and optional so you can pick just what you need now and activate more as your needs evolve.
 

Underlying technologies:

•     PHP scripting language
•     MySQL or MariaDB database
•     Smarty template engine
•     jQuery JavaScript library
•     Zend Framework

Tiki is under active development by a large international community of over 300 developers and translators, and is one of the largest open-source teams in the world. Project members have donated the resources and bandwidth required to host the Tiki.org website and various subdomains. The project members refer to this dependence on their own product as "eating their own dogfood", which they have been doing since the early days of the project.Tiki community members also participate to various related events such as WikiSym and the Libre Software Meeting.

Implementation
Tiki is developed primarily in PHP with some JavaScript code. It uses MySQL as a database. It will run on any server that provides PHP 5, including Apache and Microsoft's IIS.

Tiki components make extensive use of other open source projects, including Zend Framework, Smarty, jQuery, HTML Purifier, FCKeditor, Raphaël, phpCAS, and Morcego. When used with Mapserver Tiki can become a Geospatial Content Management System.