Home / Wikis & Documentation / Outline

Outline — open source alternative

Beautiful team knowledge base with real-time collaboration.

Strengths

  • Clean UI that competes with Notion on polish.
  • Slack, Google, SAML logins supported.
  • Real-time collaborative editing.

Weaknesses

  • BSL source-available, not strictly open source — check your policy.
  • Self-host ops (Postgres, Redis, S3) aren't one-click.
  • Fewer templates than Notion for non-engineering teams.
License: BSL 1.1 (source-available) Self-host difficulty: 3/5 Hosted cloud optionDesktop: macOS, Windows, LinuxMobile: iOS, Android

Official site · Source on GitHub

Ad slot — OSS middle

Outline is used as an alternative to

Confluence

Atlassian's team wiki and knowledge base.

See all alternatives →

More open source in this category

Discover other projects tagged Wikis & Documentation on the category page.

Other open source projects in Wikis & Documentation

BookStack

Opinionated team wiki organized as books, chapters and pages.

License: MIT

Wiki.js

Modern wiki engine with Git sync and a rich editor.

License: AGPL-3.0

Docusaurus

Meta's static site generator for product and developer docs.

License: MIT

Recommended reading

When self-hosting goes wrong: seven failure modes and how to avoid them

An honest retrospective on the ways self-hosted setups break — not in theory, but in practice — and the small habits that prevent most of them.

Will the open source project you depend on still exist in three years?

Bus factor, maintainer burnout, funding models, and the signals that separate OSS projects that survive from those that quietly decay.

From SaaS to self-hosted: a 30-day migration playbook

A week-by-week plan to move one service off SaaS and onto your own server without breaking your team's workflow.