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Outline

Open SourceOtherSelf-hostable

The fast, collaborative team wiki with real-time editing, slash commands and deep search — a self-hostable alternative to Notion and Confluence.

ReplacesNotionConfluence
Stars
★ 39.8k
+4.1k this year
Forks
3.5k
+280 this year
Commit
Active now
2 hours ago
Age
7 yrs
License
Other
Hosted
Yes
one command
92
Health score
Excellent
Top 3% of OSS projects

About Outline

Outline is what fast-moving teams reach for when Confluence feels slow and Notion feels like it wasn't built for documentation. It's a purpose-built team wiki with real-time collaborative editing, slash commands and search that actually finds things.

Because it's self-hostable, engineering and security teams can run Outline on their own infrastructure and keep company knowledge inside their own network — with the same BSL-licensed source available to audit. It integrates cleanly with Slack, GitHub and SSO providers most teams already use.

Outline organizes docs into nested collections rather than an open-ended page tree, which keeps large wikis navigable as they grow. For teams that want Notion-grade editing with the operational control of self-hosting, Outline is one of the most mature options available.

Filed underNotes & Docs

What makes it different

Real-time collaboration

Multiple people can edit the same document at once, with presence and cursors like Notion or Google Docs.

Nested collections

Docs organize into structured collections instead of an open-ended page tree, keeping big wikis navigable.

Fast, deep search

Full-text search across every document returns results instantly, even in large knowledge bases.

Self-hostable & auditable

Run it on your own infrastructure with Docker, and read the source under the Business Source License.

Project pulse
39.8k+4.1k this year
Health score92 / 100
Forks3.5k
Last commit2 hours ago
LicenseOther
Topics
#notion-alternative#wiki#knowledge-base#self-hosted#collaboration#docs#teams#open-source
Under the hood
TypeScriptReactNode.jsPostgreSQLDocker

The honest read

What we like
  • Real-time collaborative editing that feels as fast as Notion
  • Self-hostable with Docker for full data control
  • Clean integrations with Slack, GitHub and SSO
  • Nested collections keep large wikis organized as they grow
  • Mature project with a large, active company using it in production
Worth knowing
  • BSL license restricts competing hosted-Outline offerings
  • No native databases or kanban boards like Notion
  • Self-hosting requires running Postgres and Redis yourself
  • Fewer content block types than an all-in-one workspace

Quick answers

Is Outline free to use?

Outline is free to self-host under the Business Source License. There's also a paid hosted plan if you'd rather not manage the infrastructure yourself.

Is Outline fully open source?

Outline's source is available under the Business Source License (BSL), which allows self-hosting and modification but restricts offering it as a competing hosted service.

Can I self-host Outline for my team?

Yes — Outline ships an official Docker setup, so teams can run it on their own servers with Postgres and Redis for full control over company documentation.

How is Outline different from Notion?

Outline is purpose-built for team documentation and wikis with real-time editing and deep search, while Notion is a broader all-in-one workspace with databases and boards. Outline is also self-hostable under its BSL license.

Does Outline integrate with Slack and GitHub?

Yes — Outline has built-in integrations for Slack, GitHub, and most SSO providers, so it slots into an existing team toolchain without much setup.

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