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Outline

Open-source team wiki and knowledge base (self-hosted community edition) with real-time editing and SSO sign-in

Visit getoutline.com
Screenshot of Outline
Outline, from getoutline.com

Our verdict

#5 of 7 in Self-hosted team wikis · Most polished editor, heavier to run

Pros

  • Fast, modern editor with Markdown, slash commands and embeds
  • Live co-editing, comments and version history in the free Community edition
  • API and webhooks included; a documented Notion import

Cons

  • Business Source License, not open source
  • SAML, guest users, the audit log and the Confluence importer need a paid plan
  • Needs PostgreSQL, Redis, email delivery and a third-party sign-in provider
  • Support is community-only on the free edition

Choose if: Writers matter more than the install, you're coming from Notion, and your team already signs in with Google, Microsoft or Slack.

Skip if: Teams without someone comfortable running Postgres, Redis and a single sign-on provider.

Read the full review →

Rankings and alternatives

Self-hosted team wikis scores

Evaluated Nov 14, 2026 Evidence ↓
  • Writing experience · counts double 5

    5/5 means: A polished, modern editor with slash commands, embeds and inline discussion; the closest to Notion.

    Markdown support, slash commands, interactive embeds, and live comment threads; widely seen as the closest to Notion among self-hosted wikis.

  • Simultaneous editing 5

    5/5 means: Proven live co-editing with cursors, built in.

    Real-time editing and comments are included in the free Community edition.

  • Track record · counts double 4

    4/5 means: Many years in production with steady releases, but a younger or more specialized community.

    Around since 2016 with a large user base, steady releases and automatic database migrations on upgrade; the company sells hosting and support from the same code.

  • Structure and search 4

    4/5 means: Nested structure plus built-in full-text search that works for a team-sized wiki.

    Nested documents grouped in collections, with fast workspace search; the quote covers search only, the structure is from general knowledge.

  • Access control and sign-in (free edition) 3

    3/5 means: Per-page permissions or single sign-on in the free edition, with notable holes (such as no SAML or no audit log, or sign-in only through add-ons).

    Groups, permissions and SSO (Google, Entra, Slack, OIDC and more) are in Community, but SAML, guest users, extra sign-in restrictions and the audit log need the Business plan.

  • Setup and upkeep · counts double 2

    2/5 means: Several services plus an identity provider, or an application server and database to manage.

    Needs Postgres, Redis, SMTP for email sign-in and at least one third-party sign-in provider; the project itself says production needs dev-ops experience.

  • License and lock-in 2

    2/5 means: Source-available but not open source, with restrictions on use.

    Business Source License 1.1: internal self-hosting is allowed, but the license says it is not open source and bars offering a document service to outside users until it converts to Apache 2.0 on its change date.

  • Import, export and API 4

    4/5 means: Documented export and an API in the free edition, or plain-text storage; an importer from at least one other tool.

    API and webhooks are in Community, and Notion import is documented; the Confluence importer is Business only.

  • Extensions and customization 3

    3/5 means: API, webhooks and a set of integrations, but no extension ecosystem.

    Integrations with Slack, Figma and Loom, an open API and a built-in MCP server, but no plugin ecosystem.

Pricing

  • Community Edition (self-hosted) Free Free; limited features and no support. Lacks AI question answering, guest users, additional security controls, SAML 2.0, structured data attributes, Confluence importer, audit log, Glean integration.
  • Business (self-hosted) $4.00 /month per seat Billed annually, 10 user minimum (at least 480 USD/year: 4 x 12 x 10).
  • Enterprise (self-hosted) $5.00 /month per seat Billed annually, 100 user minimum (at least 6,000 USD/year: 5 x 12 x 100). Adds branding removal and a support contract.

From the vendor’s pricing page, checked Nov 14, 2026. That page is authoritative.

Evidence and sources

Self-hosted team wikis scores

Track record 1 quote
Access control and sign-in (free edition) 2 quotes
  • “Outline can be configured to accept a variety of SSO, OIDC, and SAML authentication options depending on the edition in use. Note that Outline does not support email + password authentication natively.”
    docs.getoutline.com/s/hosting/doc/authentication-7ViKRmRY5o · checked
  • “SAML 2.0 (e.g. Okta, OneLogin) – Authenticate users with any compatible SAML 2.0 provider Not included Included Included”
    getoutline.com/pricing · checked
Setup and upkeep 1 quote
License and lock-in 2 quotes
  • “Outline is BSL 1.1 licensed.”
    github.com/outline/outline · checked
  • “A “Document Service” is a commercial offering that allows third parties (other than your employees and contractors) to access the functionality of the Licensed Work by creating teams and documents controlled by such third parties.”
    raw.githubusercontent.com/outline/outline/main/LICENSE · checked

Facts

License 1 quote
  • “A “Document Service” is a commercial offering that allows third parties (other than your employees and contractors) to access the functionality of the Licensed Work by creating teams and documents controlled by such third parties.”
    raw.githubusercontent.com/outline/outline/main/LICENSE · checked
Needs 2 quotes

More from the sources

Pricing 1 quote
  • “Plan Community Edition Business Enterprise Price $0 limited features, no support Download $4/user/mo billed annually, 10 user min Purchase $5/user/mo billed annually, 100 user min Request Trial”
    getoutline.com/pricing · checked
Limits and known issues 1 quote
  • “AI question answering – OpenAI integration allows asking questions and getting direct answers from your workspace content Not included Included Included”
    getoutline.com/pricing · checked

Pricing

getoutline.com/pricing · checked