TiddlyWiki
TiddlyWiki is a highly customizable notewiki for capturing, organising and sharing complex information.
Wiki knowledge management for WordPress. 100% open source GPL. Use any theme. No modifications required.
UserPress is a wiki plugin for WordPress offering sophisticated functionality wrapped in a simple, intuitive interface. UserPress allows users to edit and create content using your frontend theme (as opposed to the wpadmin area), much like Wikipedia. UserPress can easily take advantage of the thousands of plugins already built for WordPress. UserPress is going to change the way you think about collaborative media.
Real time collaboration Knowledge base
Productivity Education and Reference
real-time-collaboration knowledge-management wiki knowledge-base wordpress-plugin wordpress-themes
TiddlyWiki is a highly customizable notewiki for capturing, organising and sharing complex information.
Free Open Source Mac OS X Windows Linux BSD Web Self-Hosted Xfce
Leading collaboration software and enterprise wiki for intranets and knowledge management.
Commercial Web Cloudron
Free open source software combining the best of wiki and CMS with community building-features.
Free Open Source Mac OS X Windows Linux PHP
BlueSpice is your tool for documentation and centrally collecting and sharing knowledge. BlueSpice turns Wikipedia’s popular software engine MediaWiki into a fully-fledged EnterpriseWiki solution.
Free Mac OS X Windows Linux Android Self-Hosted MediaWiki