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Outline vs Confluence: catalog facts
Outline	Confluence
Freemium Hosted plans are paid. Self-hosting is possible under the source-available Business Source…	Freemium Hosted plans from Atlassian, with paid tiers for larger teams and more features.
Web, Self-hosted	Web
Fast collaborative editor with slash commands and nested collections	Central wiki for team documentation and knowledge AI drafting, summaries and answers from existing pages
Source-available under the Business Source License, not open source The hosted plan is paid and self-hosting needs Postgres, Redis and object storage	Hosted service; your content lives on Atlassian's servers Built for teams rather than personal notes
Self-hosted, Web application, Hosted service	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.