Tiki Wiki CMS Groupware is a full-featured, web-based, multilingual (40+ languages), tightly integrated, all-in-one Wiki+CMS+Groupware, Free Source Software (GNU/LGPL), using PHP, MySQL, Zend Framework, jQuery and Smarty. Tiki can be used to create all kinds of Web applications, sites, portals, knowledge base, intranets, and extranets. It is actively developed by a very large international community.
Tiki is the Free and Open Source Web Application with the most built-in features. Highly configurable and modular, all features are optional and administered via a web-based interface.
Major features include a robust wiki engine, news articles, discussion forums, newsletters, blogs, file and image galleries, bug and issue trackers (form generator), a links directory, polls/surveys and quizzes, FAQs, banner management system, calendar, maps, mobile , RSS feeds, category system, tags, an advanced themeing engine (Smarty), spreadsheet, live support, shoutbox, inter-user messaging, menu generator, advanced permission system for users and groups, internal search engine, external authentication support, and much, much more. It integrates with the open source web conferencing BigBlueBlueButton.org for audio/video/chat/screensharing and whiteboard support.
Tiki Suite is a selection of Free / Libre / Open Source Software (FLOSS) server, web, mobile and desktop apps with a concerted focus on greater interoperability, security and adaptability, which is aimed at small & medium-sized organizations .
The Tiki Suite is especially suited to decentralized and knowledge-centric organizations and offers most (80%+ ) of the features all organizations need, such as: Email, Website & Blog, Shopping Cart, Intranet & Project Management, E-learning, Social Networking, Knowledge base, File sharing, Issue Tracker, Video-conferencing, LDAP, VPN, Gateway, Network, etc.
You can install anywhere (home, office, laptop, data center, etc.)