AppFlowy vs Outline: Open Source Notion Alternatives Compared

Both aim to replace Notion, but take fundamentally different approaches. AppFlowy is a desktop-first app (with web coming). Outline is a web-first collaborative wiki. Here's how to choose.

Quick Verdict

Choose AppFlowy for a personal Notion replacement with offline support and a desktop app. Choose Outline for a team wiki with real-time collaboration and excellent search.

The Comparison

Feature	AppFlowy	Outline
Primary platform	Desktop (Mac, Win, Linux)	Web
Offline support	✅ (local-first)	❌ (requires server)
Real-time collaboration	Coming	✅
Block editor	✅ (Notion-like)	✅ (Notion-like)
Databases/tables	✅	❌
Kanban boards	✅	❌
Calendar view	✅	❌
Document collections	✅ Spaces	✅ Collections
Slash commands	✅	✅
Templates	✅	✅
Search	Basic	✅ Excellent
API	Coming	✅ REST API
SSO	❌	✅ (OIDC, SAML)
Integrations	Limited	✅ (Slack, Figma, etc.)
Self-hosted	Yes (Supabase)	Yes (Docker)
Stack	Rust, Flutter, Dart	Node.js, React
License	AGPL-3.0	BSL 1.1
GitHub stars	58K+	29K+

When to Choose AppFlowy

• You want a desktop-first Notion replacement
• Offline/local-first is important
• You need databases, kanban boards, and calendar views
• Personal or small team use
• You want Notion's full feature set (not just docs)

When to Choose Outline

• Your team needs real-time collaboration
• Web-first access is preferred
• Search quality matters
• You need SSO and enterprise auth
• API access and integrations are important
• Team wiki/knowledge base is the primary use case

The Bottom Line

AppFlowy is trying to be Notion. Outline is trying to be a better Confluence. If you want a personal productivity tool with databases and boards, AppFlowy is closer. If you want a team knowledge base with collaboration, Outline is the more mature choice.

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Compare Notion alternatives on OSSAlt — features, platform support, and community health side by side.