Outline is a documentation workspace built around search and structure rather than infinite nesting. Collections, a strong editor, and genuinely fast full text search make it usable at the size where most wikis become write-only.
It integrates with Slack and the usual identity providers, and self-hosting keeps internal documentation internal.
Decisive facts
- Markdown editor with slash commands and embeds
- Full text search that stays fast across thousands of documents
- Collections and nested documents with per-collection permissions
- SSO through Google, Slack, OIDC, and SAML
- Self-hostable with S3-compatible storage