The Free / Libre / Open Source Web App with the most built-in features
The open-source digital workplace for growing teams and enterprises.
WackoWiki is a light and easy to install multilingual Wiki-engine.
The Free & Popular MediaWiki Web Software in Complete Virtual Machine
Converts PMWiki to Markdown
Open Source Enterprise Wiki and Web Application Platform
Embeddable/J2E/Desktop Java Wiki CMS
The Halo extension extends MediaWiki and Semantic Mediawiki
MediaWiki extension to create flowcharts from the links between pages.