Open-source OneNote alternative: BookStack, AFFiNE and Docmost
Updated 7/19/2026
OneNote (and Notion) keep your team notes on someone else\'s servers. For documentation and shared knowledge, you have three strong open-source alternatives, on your own server.
BookStack: structured documentation
BookStack organizes everything into books, chapters and pages, ideal for a clear, easily searchable internal knowledge base.
AFFiNE: documents and whiteboard
AFFiNE combines documents, a whiteboard and databases in one workspace, an alternative to Notion and Miro.
Docmost: collaborative wiki
Docmost is a modern wiki with workspaces, real-time editing and permissions, suited to teams that actively collaborate on documentation.
How to choose
- BookStack: technical documentation and structured knowledge bases.
- AFFiNE: visual notes, brainstorming, flexible documents.
- Docmost: team wiki with collaborative editing.
How to start
All three are in the one-click app catalog. Pick the one that fits your team\'s style; a small plan is enough to start.
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