Outline

Free self-hosted (BSL license), cloud plans available

About Outline

Outline is a beautiful, open-source knowledge base for teams. Features a fast Markdown editor, nested document collections, real-time collaboration, full-text search, and SSO integration. Self-host for free or use their managed cloud service.

Highlights

• ✓ Beautiful, distraction-free Markdown editor
• ✓ Real-time collaborative editing
• ✓ Nested collections for organizing documents
• ✓ SSO with Slack, Google, and SAML providers

Limitations

• ✗ BSL license is not fully open-source
• ✗ Self-hosting setup requires technical expertise
• ✗ Fewer templates and integrations than Confluence

Replaces

Detailed Comparisons