DocGen - Static website generator
DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
OnBase - OnBase is an enterprise content management and process management software suite.
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
openSourceCM - Web-based legal document processing and contract management
TiddlyWiki - a non-linear personal web notebook