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BookStack vs An Otter Wiki: catalog facts
BookStack	An Otter Wiki
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the MIT licence.
Web, Self-hosted	Self-hosted
Fixed hierarchy makes large documentation sets easy to navigate Granular permissions plus LDAP, SAML and OIDC sign-in	Git backend with full page history Extended Markdown with tables, formulas and diagrams
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	Mermaid diagrams and Git server are experimental Deliberately minimal feature set
Self-hosted, Web application	Self-hosted
Open source	Open source
License: MIT	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
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.