TagSpaces is an offline, open source, document manager with tagging
Super Productivity is an advanced todo list app
StudieCompact vat al jouw studiewijzers samen in één overzicht
Freeplane add-on for task management and memo taking
small efficient text editor for Windows and Linux
Set styles to words and create a Table of Contents in a click
Open Source Enterprise Content Management ECM
Real-time collaborative writing
Piggydb helps you have more fun with knowledge creation.