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Open Source
AppFlowy
The leading open-source Notion alternative
Overview
Built with Flutter + Rust, AppFlowy is a collaborative AI workspace where your data stays yours. Documents, Grid/Board/Calendar database views and team spaces all work fully offline; for sync and collaboration you can self-host AppFlowy Cloud or use the managed one.
Why it stands out
- Local-first: content lives on your own devices by default
- Documents, database views and team spaces cover the core Notion workflows
- Fully self-hostable via AppFlowy Cloud — sync without vendor servers
- Desktop and mobile clients across all major platforms, usable offline
People and teams who want Notion's capabilities with real data ownership — and developers studying a large Flutter + Rust codebase.