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Outline vs Cosense: catalog facts
Outline	Cosense
Freemium Hosted plans are paid. Self-hosting is possible under the source-available Business Source…	Freemium Can be tried directly; organisations contact the developer about rollout and pricing.
Web, Self-hosted	Web
Fast collaborative editor with slash commands and nested collections	Quick page creation with bracket links between pages Notes form a linked network rather than a folder tree
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 only; notes live on the developer's servers Pricing details for organisations require contacting the developer
Self-hosted, Web application, Hosted service	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is 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 October 2, 2026

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