Описание тега tiki-wiki
Tiki Wiki CMS Groupware, originally and more commonly known as TikiWiki or simply Tiki, is a free and open source wiki-based, content management system and Online office suite written primarily in PHP and distributed under the GNU Lesser General Public License (LGPL) license. In addition to enabling websites and portals on the internet and on intranets and extranets, Tiki contains a number of collaboration features allowing it to operate as a Geospatial Content Management System (GeoCMS) or Groupware web application.
Tiki includes all the basic features common to most CMSs such as the ability to register and maintain individual user accounts within a flexible and rich permission / privilege system, create and manage menus, RSS-feeds, customize page layout, perform logging, and administer the system. All administration tasks are accomplished through a browser-based user interface.
Tiki features an all-in-one design, as opposed to a core+extensions model followed by other CMSs. This allows for future-proof upgrades (since all features are released together), but has the drawback of an extremely large (more than 1,000,000 lines) codebase. Tiki can run on any computing platform that supports both a web server capable of running PHP 5 (including Apache, IIS, Lighttpd, Hiawatha, Cherokee, and nginx) and a MySQL database to store content and settings.
Reference: http://en.wikipedia.org/wiki/Tiki_wiki