Wult.io - Accessible self serve data governance
MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
Team-One - Team-One is more than messaging; it’s teamwork made simple.
TiddlyWiki - a non-linear personal web notebook
Getodo - colorful lightweight multi-level to-do list on Android, iOS, web.
Confluence - Confluence is content collaboration software that changes how modern teams work