Free & Open-Source Microsoft OneNote for Business Alternatives

Free-form notebook for business teams.

1. Joplin ↗ FOSSPRIVATESELF-HOST
   Encrypted markdown notes with cloud sync.
   ●○○Easy · Imports via export file
2. Trilium ↗ FOSSPRIVATESELF-HOST
   Hierarchical note tree with scripting support.
   ●●○Medium · Imports via export file
3. Obsidian ↗ PRIVATE
   Markdown-based knowledge graph (free for personal use).
   ●○○Easy · Imports Markdown / plain text