Tubics - SEO & analysis for YouTube videos
DokuWiki - DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database.
VidIQ - Generate tags for YouTueb Videos. Works as a browser extension .
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
Biteplay - Create highly targeted Youtube ad campaigns in 5 minutes
TiddlyWiki - a non-linear personal web notebook