WackoWiki - WackoWiki is a light and easy to install multilingual Wiki-engine.
GNU social - GNU social is communication software for both public and private communications.
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
YouWeb - The first social network focused on your way to experience the Web and interact with virtual...
DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
Gab - Gab is an ad-free social network dedicated to free speech.