DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
AdZis - AI Content Engine for E-Commerce/E-Business Websites.
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
Constant Content - Constant Content is a content creation platform that allows you to create beautifully designed, high-quality, and unique content for business.
TiddlyWiki - a non-linear personal web notebook
Contenteum.io - Create Content That Ranks. At Scale.