BookStack

Completely free and open-source (MIT license)

About BookStack

BookStack is a free, open-source documentation platform that organizes content into a clear hierarchy of books, chapters, and pages. Features a WYSIWYG and Markdown editor, full-text search, LDAP/SAML authentication, and role-based permissions. Runs on minimal hardware.

Highlights

• ✓ 100% free with MIT license — no paid tiers
• ✓ Intuitive books/chapters/pages organization
• ✓ WYSIWYG and Markdown editor support
• ✓ LDAP, SAML2, and OAuth authentication built-in

Limitations

• ✗ No real-time collaborative editing
• ✗ Self-hosted only — no managed cloud option
• ✗ Less flexible structure than Confluence spaces

Replaces

Detailed Comparisons