Compare software

OutlineBookStack
Freemium

Hosted plans are paid. Self-hosting is possible under the source-available Business Source…

 Free

The open-source software is available without a license fee. Hosting, hardware and…

Web, Self-hosted Web, Self-hosted
  • Fast collaborative editor with slash commands and nested collections
  • Fixed hierarchy makes large documentation sets easy to navigate
  • Granular permissions plus LDAP, SAML and OIDC sign-in
  • Source-available under the Business Source License, not open source
  • The hosted plan is paid and self-hosting needs Postgres, Redis and object storage
  • PHP, MySQL and a web server are required; there is no single-binary option
  • The rigid structure gets in the way if you want a free-form wiki
Self-hosted, Web application, Hosted service Self-hosted, Web application
Closed source Open source
License not stated License: MIT
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

Checked September 22, 2026

Checked September 22, 2026

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