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Outline vs Microsoft Loop: catalog facts
Outline	Microsoft Loop
Freemium Hosted plans are paid. Self-hosting is possible under the source-available Business Source…	Freemium Available to get started with a Microsoft account, with paid Microsoft 365 plans adding…
Web, Self-hosted	Web
Fast collaborative editor with slash commands and nested collections	Live components that sync across Microsoft 365 apps Page templates and a quick insert menu
Source-available under the Business Source License, not open source The hosted plan is paid and self-hosting needs Postgres, Redis and object storage	Tied to Microsoft accounts and the Microsoft 365 ecosystem Copilot features depend on Microsoft 365 plans
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	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.