MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
AdZis - AI Content Engine for E-Commerce/E-Business Websites.
TiddlyWiki - a non-linear personal web notebook
Constant Content - Constant Content is a content creation platform that allows you to create beautifully designed, high-quality, and unique content for business.
Confluence - Confluence is content collaboration software that changes how modern teams work
Contenteum.io - Create Content That Ranks. At Scale.