DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
LogikCull - Logikcull is a discovery automation platform that helps expedite and lower the cost of litigations & investigations.
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
Nextpoint - Nextpoint offers solutions for eDiscovery, evidence exchange, deposition and transcript management.
TiddlyWiki - a non-linear personal web notebook
Knovos Discovery - A Holistic eDiscovery Solution