Outline
A collaborative team knowledge base and wiki with realtime editing and Markdown compatibility, built with React and Node.js and available hosted or self-run.
- GitHub stars
- 41k
- Last commit
- yesterday
- Latest release
- v1.10.1
- Self-hosted
- Yes
- Hosted version
- Available

Outline is a knowledge base for teams, built with React and Node.js. It focuses on fast, collaborative writing: documents are edited together in realtime, stay compatible with Markdown, and are organized into collections so a growing team can find what it has written down.
The maintainers offer a hosted version at getoutline.com, and the repository contains the source that runs Outline and its associated services. If you only want to use Outline you do not need to run the code yourself, while teams that want their own copy can follow the documentation for a production configuration and use the published container images. Topics also mention a Slack integration.
The repository license is listed as 'Other', so review it before commercial redistribution. Outline suits teams looking for a wiki or internal documentation tool with a clean editor, as an alternative to products such as Confluence or Notion for company knowledge. The project does not accept AI-generated pull requests.
Key features
- Realtime collaborative editing
- Markdown-compatible document editing
- Collections for organizing a wiki
- Integration with Slack workspaces
- Hosted service at getoutline.com
- Container images for self-running
Pricing: Cloud pricing is by team size: $10 per month for 1-10 members, $79 for 11-100 and $249 for 101-200. The first 30 days are free; larger teams are quoted.

