What is Outline?
Outline is a team knowledge base and wiki with real-time collaborative editing, nested documents, full-text search and integrations such as Slack. Its source is published on GitHub under the Business Source License 1.1 (source-available, not OSI open source) and can be self-hosted via Docker; the hosted service is a paid subscription with only an initial free trial, not a permanent free tier.
Read the full overview
Sources checked 27 September 2026: official website, pricing page.
Key capabilities
- Collaborative docs: Real-time multiplayer editing of nested documents.
- Search: Fast full-text search across the knowledge base.
- Integrations: Slack and other integrations for notifications and embeds.
Team documentation and knowledge-base search are its core areas; it is not a general-purpose database or project tracker.
Choose Outline when a team wants a fast, Notion-adjacent wiki focused on documents and search rather than databases or task tracking, and is comfortable with either a paid hosted plan or operating a self-hosted instance under the BSL terms.
Because there is no permanent free plan (only a time-limited trial), budget for the paid tier from the start, or review the BSL license terms if self-hosting to confirm compliant use at your organization's size.
Technical details
- Access
- Self-hosted
- Source model
- Other license
- Founded
- 2020
- Pricing model
- Paid
- API
- Not specified
- Website
- www.getoutline.com ↗
Official resources
What to verify for your environment
Start from the users, systems and operating responsibilities the tool needs to support.
- Confirm current features, licensing and support terms with the publisher.
- Validate deployment, data location, access control, backup and recovery requirements.
- Test integrations, export paths and a representative operational workflow before committing.
ITHub profiles are discovery summaries. Read how product information is presented or report a correction.
Reviews of Outline
No published reviews yet.
Loading review form…
