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BetterOpenSource

AppFlowy vs Outline

A side-by-side comparison of two open-source tools to help you choose the right one.

Feature
SummaryThe open-source Notion alternative, built in Rust.A fast, collaborative team knowledge base.
GitHub stars64K31K
LicenseAGPL 3.0BSL 1.1
LanguageRustTypeScript
PricingFree & Open SourceFree & Open Source
Self-hostable
ReplacesNotion, ConfluenceConfluence, Notion
Rating4.6 / 54.6 / 5

AppFlowy features

  • Docs, wikis, and Notion-style databases
  • Local-first storage with optional sync
  • Kanban, grid, and calendar views
  • AI writing assistant (local or cloud)
  • Cross-platform desktop and mobile apps

Outline features

  • Real-time collaborative document editor
  • Blazing-fast full-text search
  • Collections, permissions, and sharing
  • Slack and SSO integrations
  • Markdown import/export and API

AppFlowypros & cons

Pros

  • Fast and private by default
  • Familiar block-based editing
  • Active roadmap and community

Cons

  • Sync/collaboration still maturing
  • Fewer integrations than Notion

Outlinepros & cons

Pros

  • Excellent writing and reading experience
  • Great search and structure
  • Clean, fast UI

Cons

  • Self-hosting requires SSO setup
  • BSL license has commercial conditions

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